Name: Facts (Addition) Identifying Whole and Parts …content.njctl.org/courses/math/2nd-grade/facts/unit-2...Facts (Addition) – Identifying Whole and Parts Classwork 1. Write the

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Name:

Facts (Addition) – Identifying Whole and Parts

Classwork

1. Write the whole number of objects in each box.

2. Write the number of parts listed.

3. Circle the whole number in the problems. Draw a rectangle around the parts.

Sarah had seven rubber ducks. Two of them were yellow and five of them were orange.

Mike had 5 marbles. 3 of them were big and 2 of them were small.

Maria had 9 toy trucks. She gave 2 away. Now she has 7 toy trucks.

Jared had 4 stickers. He bought 2 more. Now he has 6 stickers in all.

Whole number: _______ Squares

Whole number: _______ Triangles

Part: There are _______ Squares.

This hexagon is broken into _____ parts.


Name:

Facts (Addition) – Identifying Whole and Parts

Homework

1. Write the whole number of objects in each box.

2. Write the number of parts listed.

3. Circle the whole number in the problems. Draw a rectangle around the parts.

Lee had two purple crayons and one green crayon. He had three crayons in all.

Tim had 8 pennies. 4 of them were new and the rest were old.

Ellen had a pen. Her sister gave her one more. Now she has two pens.

Isabelle had 10 kittens. She gave 2 away. Now she has 8 kittens.

Whole number: _______ Triangles

Whole number: _______ Circles

Part: There are _______ Triangles.

This hexagon is broken into _____ parts.


Name:

Facts (Addition) – Relationship of Whole and Parts

Classwork

Start with the whole number FOUR. What are some number sentences you

can make? Draw a picture and write the number sentence for each. Hint:

you can use the Addition Number Sentence Organizer and some objects

to help you make number sentences!

Example:

1 + 3 = 4

________ + ________ = ________

________ + ________ = _________

________ = ________ + ________

________ = ________ + _________

2. Why is the number sentence 8 = 5 + 3 correct? Explain your thinking:

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________


+ Addition Number Sentence Organizer +

_______________ +_______________ =_______________

______________ =______________ +______________


Name:

Facts (Addition) – Relationship of Whole and Parts

Homework

1. Start with the whole number THREE. What are some number sentences

you can make? Draw a picture and write the number sentence for each.

Hint: you can use the Addition Number Sentence Organizer and some

objects to help you make number sentences!

Example:

1 + 2 = 3

________ + ________ = ________

________ + ________ = _________

________ = ________ + ________

________ = ________ + _________

2. Why is the number sentence 6 = 2 + 4 correct? Explain your thinking:

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________


+ Addition Number Sentence Organizer +

_______________ +_______________ =_______________

______________ =______________ +______________


Name:

Facts (Addition) – Addition Strategies

Classwork

1. Add. Write the turn around facts.

2. Circle the whole number in the problem (it might be in the

question). Draw a rectangle around the parts. Draw a picture to show

the problem. Solve.

7 + 3 = ______

__+__ = ______

2 + 4 = ______

_____ = __ + __

1 + 8 = ______

__+__ = ______

_____ = __ + __

_____ = __ + __

4 + 5 = ______

_____ = __ + __

6 + 2 = ______

__+__ = ______

Ryan has 6 pencils in his box.

He has 3 pens in his box.

How many pens and pencils are in

the box?

_____+_____ =______pens and

pencils.


Name:

Facts (Addition) – Addition Strategies

Homework

1. Add. Write the turn around facts.

2. Circle the whole number in the problem (it might be in the question).

Draw a rectangle around the parts. Draw a picture to show the problem.

Solve.

2 + 3 = ______

__+__ = ______

6 + 4 = ______

_____ = __ + __

5 + 2 = ______

__+__ = ______

_____ = __ + __

_____ = __ + __

9 + 1 = ______

_____ = __ + __

7 + 2 = ______

__+__ = ______

There are 5 shiny pennies in the

piggy bank.

Sara puts in 4 more.

How many total pennies are in the

piggybank now?

_____+_____ =______pennies

There are 6 birds on a tree branch.

No more birds join them.

How many birds on the tree

branch?

_____+_____ =______birds


Name:

Facts (Addition) – Addition Strategies-Adding Past Ten

Classwork

1. Write the number model. Solve.

2. Add.

3. Circle the correct number model to solve.

Sammy has 8 seashells.

He found 6 more seashells.

How many seashells did he find?

_____+_____ =______seashells

4 + 9 = ______ ______ = 7 + 5 8 + 4 = ______

5 + 6 = ______

______ = 9 + 4

3 + 8 = ______

A squirrel gathered 7 acorns.

Then he gathered 8 more.

How many acorns did the squirrel

gather altogether?

7 + 7 = 14

8 + 5 = 13

8 + 7 = 15

What strategy

will I use?


Name:

Facts (Addition) – Addition Strategies-Adding Past Ten

Homework

1. Write the number model. Solve.

2. Add.


Amy has 9 books on the top shelf.

She puts 3 more books on the shelf.

How many books does Amy have

now?

_____+_____ =______books

2 + 8 = ______ ______ = 7 + 6 8 + 8 = ______

5 + 9 = ______

______ = 6 + 4

9 + 8 = ______

There are 9 red cars in the parking lot.

There are 7 blue cars in the parking lot.

How many cars are in the parking lot?

9 + 3 = 12

9 + 7 = 16

9 + 9 = 18

What strategy

will I use?


Name:

Facts (Addition) – Making Tens

Classwork

1. How many more are needed to make ten? Write the number model.

______ + ______ = _______

______ + ______ = _______

2. Circle the correct number model.

3 + 7 =10

6 + 4 =10

8 + 2 =10

6 + 4 =10

5 + 5 =10

1 + 9 =10


Name:


Homework

1. How many more are needed to make ten? Write the number model.

______ + ______ = _______

______ + ______ = _______

2. Circle the correct number model.

0 + 10 =10

1 + 9 =10

7 + 3 =10

9 + 1 =10

10 + 0 =10

6 + 4 =10


Name:


Classwork

1. Draw counters in the ten frames to solve.

7

+ 8

9

+ 3

2. Add.

3. Use the ten frames to solve.

5

+ 9

10

+ 4

7

+ 6

10

+ 8

3

+ 8

4

+ 7

10

+ 2

Jenny had 7 rocks in her collection.

She added 5 more rocks.

How many rocks does she have?

_______ + _______ = ________ rocks


Name:


Homework

1. Draw counters in the ten frames to solve.

10

+ 5

2. Use the ten frames to solve.

3. Add.

6

+ 7

There are 10 white hens.

There are 6 brown hens.

How many hens in all?

_______ + _______ = ________

8

+ 6

9

+ 8

4

+ 7

6

+ 9

10

+ 5


Name:

Facts (Addition) – Doubles Facts

Classwork

1. Write the doubles fact for each domino.

2. Add. Circle the doubles facts.

3. Solve. Write the number model.

____ + ____ = ______

____ + ____ = ______

8

+ 8

7

+ 6

1

+ 1

5

+ 3

9

+ 9

7

+ 7

James and Anna are twins.

They both lost 3 teeth this summer.

How many teeth did they lose together?

number model


Name:

Facts (Addition) – Doubles Facts

Homework

1. Write the doubles fact for each domino.

2. Add. Circle the doubles facts.


____ + ____ = ______

____ + ____ = ______

10

+ 5

6

+ 6

10

+ 10

9

+ 9

7

+ 5

4

+ 4

Tammy mailed out 8 invitations on Monday.

She mailed the same number on Tuesday.

How many invitations did Tammy mail?

number model


Name:

Facts (Addition) – Double plus 1

Classwork

1. Are the addends neighbors? Double the smaller addend and add 1.

2. Add.

Which can you use doubles plus one to solve? Circle.

3. Solve. Write the number model. Use doubles plus one to solve.

5 + 6

____ + 1 = ______

4 + 3

____ + 1 = ______

6 + 7

____ + 1 = ______

3 + 2

____ + 1 = ______

3 + 4 = ______ 7 + 7 = ______ 9 + 8 = ______

7 + 8 = ______

2 + 5 = ______

6 + 8 = ______

Frank scored 4 points.

Jacob scored one more point than Frank.

How many points did they score altogether?

number model


Name:

Facts (Addition) – Double plus 1

Homework

1. Are the addends neighbors? Double the smaller addend and add 1.

2. Add.

Which can you use doubles plus one to solve? Circle.

3. Solve. Write the number model. Use doubles plus one to solve.

1 + 2

____ + 1 = ______

5 + 4

____ + 1 = ______

8 + 9

____ + 1 = ______

8 + 7

____ + 1 = ______

8 + 4 = ______ 6 + 7 = ______ 2 + 1 = ______

6 + 5 = ______

2 + 9 = ______

7 + 5 = ______

Jess found 7 shells on the beach.

Zach found one more shell than Jess.

How many shells did they find altogether?

number model


Name:

Facts – Doubles minus 1

Classwork

1. Are the addends neighbors? Double the larger addend and subtract 1.

2. Add.

Which can you use doubles minus one to solve? Circle.

3. Solve. Write the number model. Use doubles minus one to solve.

3 + 2

____ - 1 = ______

4 + 5

____ - 1 = ____

9 + 8

____ - 1 = ______

6 + 7

____ - 1 = ______

3

+ 5

6

+ 7

3

+ 2

9

+ 8

4

+ 5

3

+ 3

Jack rode his bike 3 miles on Friday.

On Saturday he rode his bike 4 miles.

How many miles did he ride altogether?

number model


Name:

Facts – Doubles minus 1

Homework

1. Are the addends neighbors? Double the larger addend and subtract 1.

2. Add.

Which can you use doubles minus one to solve? Circle.

3. Solve. Write the number model. Use doubles minus one to solve.

8 + 7

____ - 1 = ______

5 + 6

____ - 1 = ____

9 + 8

____ - 1 = ______

3 + 4

____ - 1 = ______

3

+ 4

9

+ 7

5

+ 4

1

+ 2

8

+ 5

7

+ 3

9 children in first grade ordered milk.

8 children in second grade ordered milk.

How many cartons of milk are needed for

first and second grade?

number model


Name:

Facts – Double plus and minus 1

Classwork Extra Practice

You can use doubles to help you add when the numbers are next to each

other on the number line.

Add. Write the double fact you used to solve.

Circle the strategy you used to solve.

5 + 6 = ______

____ + _____ =____

Doubles plus one

Doubles minus one

2 + 1 = ______

____ + _____ =____

Doubles plus one

Doubles minus one

9 + 8 = ______

____ + _____ =____

Doubles plus one

Doubles minus one

7 + 6 = ______

____ + _____ =____

Doubles plus one

Doubles minus one


Name:

Facts – Double plus and minus 1

Homework Extra Practice

You can use doubles to help you add when the numbers are next to each

other on the number line.

Add. Write the double fact you used to solve.

Circle the strategy you used to solve.

7 + 8 = ______

____ + _____ =____

Doubles plus one

Doubles minus one

3 + 4 = ______

____ + _____ =____

Doubles plus one

Doubles minus one

4 + 5 = ______

____ + _____ =____

Doubles plus one

Doubles minus one

8 + 9 = ______

____ + _____ =____

Doubles plus one

Doubles minus one


Name:

Facts (Addition) – Adding Three Numbers

Classwork

1. Add. Circle the two addends you will add first. Choose one problem

and explain why you circled those two addends first.

I circled ______ and ______ first because _________________________________

_______________________________________________________________________

2. Add.

3. Solve.

_______ + _______ +_______ = ________

*Which 2 numbers did you add first and why?

3 + 5 + 1 = _____ _____ = 7+ 6 + 4

5 + 0 + 8 =_____

3

4

+ 6 _____

5

2

+ 5 _____

7

4

+ 1 _____

2

8

+ 3 _____

9

5

+ 1 _____

Nick and Jason both scored 6 points.

Brett scored 8 points.

How many points did they score for their team?


Name:


Homework

1. Add. Circle the two addends you will add first. Choose one problem

and explain why you circled those two addends first.

I circled ______ and ______ first because _________________________________

_______________________________________________________________________

2. Add.

3. Solve.

_______ + _______ +_______ = ________cookies

*Which 2 numbers did you add first and why?

2 + 0 + 9 = _____ _____ = 5 + 5 + 8

7 + 8 + 4 =_____

1

5

+ 7 _____

3

3

+ 6 _____

9

7

+ 3 _____

2

6

+ 7 _____

4

0

+ 9 _____

There are 5 chocolate chip cookies on the tray.

There are 7 oatmeal and 6 sugar cookies on the tray.

Are there enough cookies for 15 children? yes or no


Name:


Classwork

1. Find five ways to make the number sentence true.

1. Circle the number model that does not equal 19.

9 + 6 + 4

8 + 4 + 6

6 + 6 + 7

9 + 7 + 3


7 + ____ + ____ = 16 7 + ____ + ____ = 16

7 + ____ + ____ = 16

7 + ____ + ____ = 16 7 + ____ + ____ = 16

Jenna has 15 hair ribbons. She has 6 pink.

She has 2 yellow. The rest are purple.

How many purple ribbons does she have?

_______ purple ribbons

6 + 2 + 3 = 15

6 + 2 + 7 = 15

6 + 2 + 6 = 15


Name:


Homework

1. Find five ways to make the number sentence true.

2. Circle the number model that does not equal 12.

5 + 6 + 1

4 + 3 + 4

7 + 2 + 3

8 + 0 + 4


9 + ____ + ____ = 17 9 + ____ + ____ = 17 9 + ____ + ____ = 17

9 + ____ + ____ = 17 9 + ____ + ____ = 17

Brandon has 15 trading cards.

He has 9 baseball and 3 basketball cards.

The rest are football cards.

How many football cards does he have?

_______ football cards

9 + 3 + 5 = 15

3 + 9 + 3 = 15

9 + 3 + 1 = 15


Name:

Facts (Subtraction) – Relationship of Whole and Parts

Classwork

1. Start with the whole number FOUR. What are some number sentences


Hint: you can use the Subtraction Number Sentence Organizer and some


Example:

1 = 4 - 3

________ - ________ = ________

________ - ________ = _________

________ = ________ - _________

________ = ________ - _________

2. Why is the number sentence 1 = 3 - 2 correct? Explain your thinking:

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________


- Subtraction Number Sentence Organizer -

_______________ -_______________ =_______________

_____________ =_____________ -_____________


Name:

Facts (Subtraction) – Relationship of Whole and Parts

Homework

1. Start with the whole number THREE. What are some number sentences


Hint: you can use the Subtraction Number Sentence Organizer and some


Example:

1 = 3 - 2

________ - ________ = ________

________ - ________ = _________

________ = ________ - _________

________ = ________ - _________

2. Why is the number sentence 2 = 6 - 4 correct? Explain your thinking:

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________


- Subtraction Number Sentence Organizer -

_______________ -_______________ =_______________

_____________ =_____________ -_____________


Name:

Facts (Subtraction) – Subtraction Strategies

Classwork

1. Write the number model in the box.

5 birds on a branch.

3 birds fly away.

How many birds on the branch?

number model

Chris has 7 cookies.

He ate 2.

How many are left?

number model

2. Subtract.

4 - 3 = ______

______ = 5 - 1

6 - 4 = ______

9 - 5 = ______

______ = 8 - 3

7 - 5 = ______

3. Explain which strategy you used to solve 7 – 5 = ____ and why:

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________


Name:


Homework

1. Write the number model in the box.

8 children in the park.

6 go home for lunch.

How many children in the park now?

number model

There are 6 rabbits in the field.

4 hop away.

How many are left in the field?

number model

2. Subtract.

9 - 5= ______

______ = 7 - 3

5 - 2 = ______

10 – 5 = ______

______ = 3 - 1

9 – 6 = ______

3. Explain which strategy you used to solve ____ = 3 - 1 and why:

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________


Name:


Classwork

1. Subtract.

14 - 5= ______

______ = 10 - 3

11 - 2 = ______

2. Write the number model in the box. Solve.

There are 11 muffins on the plate.

Chad takes 2.

How many muffins are left?

number model

There are 17 bees in the hive.

5 bees fly away.

How many bees are left in the hive?

number model

James has 15 pencils.

He gives 3 away.

How many pencils does he have now?

number model

3. Which strategy did you use (counting up or counting back) to

solve the bee problem? What are you actually doing (what are

you doing with the whole and the parts)?

_______________________________________________________

_______________________________________________________

_______________________________________________________

_______________________________________________________


Name:


Homework

1. Subtract.

14 - 5= ______

______ = 10 - 3

11 - 2 = ______

2. Write the number model in the box. Solve.

There are 18 students in class.

4 are absent.

How many students are present?

number model

Greg had 15 model cars.

He gave 2 to Jake.

How many cars does Greg have now?

number model

Lauren picked 11 strawberries.

She ate 4 before she got home.

How many strawberries does Lauren have?

number model

3. Which strategy did you use (counting up or counting back) to

solve the car problem? What are you actually doing (what are

you doing with the whole and the parts)?

_______________________________________________________

_______________________________________________________

_______________________________________________________

_______________________________________________________


Name:

Facts (Mixed) – Adding/Subtracting Zero

Classwork

1. Write the number models for the domino.

2. Add or subtract.


____ - ____ = ______

____ + ____ = ______

____ - ____ = ______

____ + ____ = ______

17

- 0 _____

0

+ 9 _____

25

+ 0 _____

36

- 0 _____

72

- 0 _____

Kayla caught 6 fish on a camping trip.

Her dad caught none.

How many fish did they catch?

number model


Name:

Facts (Mixed) – Adding/Subtracting Zero

Homework

1. Add or subtract.

2. Fill in the missing number.


22

+ 0 _____

0

+11 _____

48

- 0 _____

6

+ 0 _____

19

- 0 _____

___ - 0 = 13 10 + ___ = 10 ____ - 0 = 80

___ + 34 = 34

21 - ___ = 21 ____ + 0 = 0

Danny had 11 dimes in his pocket.

He spent none of them.

How many dimes are left in his pocket?

number model


Name:

Facts (Mixed) – Fact Families

Classwork

Fill in the facts in each for the fact family.


Name:


Homework

Fill in the facts in each for the fact family.


Name:


Classwork

1. Write the fact family numbers on the lines and a -, +, or = in the circles.

2. Write the missing numbers for this fact family.

______, _______, _______

______, _______, _______

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ + 6 = _____

____ + ____ = 8

8 - ____ = _____

____ - ____ = 6


---------------------------------------------------------------------------------------------------------------------------------

= +

= +

+ =

+ =

---------------------------------------------------------------------------------------------------------------------------------

- =

- =

= -

= -


Name:


Homework

1. Write the fact family numbers on the lines and a -, +, or = in the circles.

2. What is a missing fact for this family? Circle it.

______, _______, _______

______, _______, _______

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

____ ____ ____

7+ 8 = 15

8 + 7 = 15

15 – 8 = 7

?

a. 7 + 1 = 8

b. 15 – 7 =15

c. 15 – 7 =8

d. 3 + 5 = 8


---------------------------------------------------------------------------------------------------------------------------------

= +

= +

+ =

+ =

---------------------------------------------------------------------------------------------------------------------------------

- =

- =

= -

= -


Name:

Facts (Number Stories) - Part/Part Whole

Classwork

1. Use the domino to fill in the part/part whole chart.

2. Solve. Use the part/part whole chart. Write the number model.

Mrs. Jones put 9 red roses in a vase.

Then she added 6 pink roses.

How many roses are in the vase now?

number model

____ ____ = ______

The farmer has 17 sheep.

8 sheep are black.

How many sheep are white?

number model

____ ____ = ______


Name:

Facts (Number Stories) - Part/Part Whole

Homework

1. Use the domino to fill in the part/part whole chart.

2. Solve. Use the part/part whole chart. Write the number model.

Name:

Anna needs to read 12 pages in her

book.

She read 8 pages in the morning.

How many pages are left to read?

number model

____ ____ = ______

Trevor has a box of 6 markers.

Mark has a box of 8 markers.

How many markers altogether?

number model

____ ____ = ______


Facts (Number Stories) - Comparison Stories

Classwork

1. Tad drew 11 shapes. He drew 4 squares and 7 triangles. Fill in the chart.

How many more triangles?

_________

2. Solve. Use the comparison chart. Write the number model.

It takes Pam 15 minutes to walk to school.

It takes Beth 7 minutes to walk to school.

How many more minutes does it take

Pam to walk to school?

number model

____ ____ = ______

Andy has 2 more trading cards than Joe.

Joe has 11 cards.

How many cards are there in all?

number model

____ ____ = ______


Name:

Facts (Number Stories) - Comparison Stories

Homework

1. Seven children coming to the party. You have 7 hats and 3 balloons.

How many more balloons do you need?

_________


There are 14 cows in the field.

8 are black and white.

How many are brown?

number model

____ ____ = ______

Maria has 9 girls in her class.

Sara’s class has 3 more girls.

How many girls are in Sara’s class?

number model

____ ____ = ______


Name:

Facts (Number Stories) – Change to More

Classwork


There were 16 children in the band.

4 more children join the band.

How many children in the band now?

number model

____ ____ = ______

8 children play the flute in the band.

Last year 5 children played the flute.

How many more children play the flute

this year?

number model

____ ____ = ______

3 more children play clarinet this year.

Now there are 7 clarinet players.

How many clarinet players were there

last year?

number model

____ ____ = ______


Name:

Facts (Number Stories) – Change to More

Homework


Michael read 10 books this week.

He read 7 books last week.

How many more books did he read this

week?

number model

____ ____ = ______

Patty read 9 pages in her chapter book.

At recess she read 8 more pages.

How many pages did Patty read so far?

number model

____ ____ = ______

Terry read for 20 minutes on Tuesday.

That is 6 more minutes than on Monday.

How many minutes did Terry read on

Monday?

number model

____ ____ = ______

Name: Facts (Addition) Identifying Whole and Parts …content.njctl.org/courses/math/2nd-grade/facts/unit-2...Facts (Addition) – Identifying Whole and Parts Classwork 1. Write the

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