U2 l2 review

UNIT 2

Let’s review decimals

COMPARING & ORDERING

Line up the decimals.

Fill in the empty spaces with zeros.

Compare from the left to the right.

WORK THESE

3.45 _____ .4591

.432 ; .3128 ; .4219 ; 1.2

.562 ; .2891 ; 2.34 ; 2.1

ROUNDING

Find the rounding place.

Look to the right of the rounding

place.

If the number is five or greater, round

up.

If the number is less than five, your

rounding place stays the same.

ROUNDING CONT…

Numbers behind the rounding place

turn to zeroes in FRONT of the decimal.

Numbers behind the rounding place

fall into the water BEHIND the decimal

WORK THESE

Round to the tenths: 3.2678

Round to the hundredths: 125.6728

Round to the ten thousandths:

2.387198

MULTIPLYING

Line up the numbers.

Count the number of digits behind a decimal point

Multiply the numbers like you would whole

numbers

Put the decimal at the end of the answer and move

it the number of places you counted in step two.

WORK THESE

34.56 x 6.5

8.973 x 7.6

DIVISION

Move the decimal to the end of the

outside number.

Move the decimal the same number

of places on the inside number.

Put the decimal on the roof.

DIVISION CONT…

Divide like you would with whole

numbers.

If you have a remainder, add zeroes

behind the decimal and continue

dividing.

WORK THESE

Round Quotients to the nearest

hundredths!

56.789 ÷ 4.5

2.3866 ÷ .73

ESTIMATION

Round to the highest place value!!

Work These

23.57 + 48.9

.341 - .156

.5879 x 1.78

WORD PROBLEMS

READ IT!

PLAN IT!

SOLVE IT!

CHECK IT!

WORD PROBLEMS CONT..

Sarah bought 28 packages of peanuts at

$2.38 each. How much did she spend?

Trenton’s band made $142.50 playing a

gig last week. If there are five members in

the band, how much did each member

receive?

WORD PROBLEMS CONT..

Megan went to the grocery store and

bought 3 pounds of apples at $.99 a

pound, a box of cereal at $3.21, and

two cokes at $1.19 each. If Megan gave

the clerk a $20 bill, how much change

would she receive?

WORD PROBLEMS CONT..

A large cargo plane can carry 87.5

tons. Tanks weighing 4.5 tons are being

loaded onto it. What is the maximum

number of tanks it can carry?