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Prerequisite Skills SKILL CHECK me: ______________ Date: ____________ r Math MC2 Ch 2 Decimals Name Date _hr Math source N a m e D a t e _ h r M a t h s o u r c e
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Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Jan 01, 2016

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Page 1: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills SKILL CHECK

Name: ______________ Date: ___________________ hr Math MC2 Ch 2

DecimalsName Date_hr Math source N

ame

Date

_hr Math

source

Page 2: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills SKILL CHECK

PLACE VALUE

Name: ______________ Date: ___________________ hr Math MC2 Ch 2 pgs 54-55

Decimals: Ordering, comparing, & rounding

Nam

eD

ate_hr M

athsource

ROUNDING:When Rounding:•0, 1, 2, 3, 4, stays the same•5, 6, 7, 8, 9 rounds up•Every empty place after where you rounded to becomes a ZERO

Page 3: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills SKILL CHECK

PLACE VALUE

Name: ______________ Date: ___________________ hr Math MC2 Ch 2 pgs 54-55

Decimals: Ordering, comparing, & rounding

Nam

eD

ate_hr M

athsource

Comparing:When Comparing:•1st list the numbers lining up the decimal points•2nd write ZEROS as place holders so that #s have the same # of digits•3rd then compare digits from left to right

Page 4: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills SKILL CHECK

Round the number to the place value of the red digit.

4. 845

ANSWER 850

5. 12,0.47

6. 739.022

739.000ANSWER

100.00ANSWER

7. 299.3438

300.0000ANSWER

Page 5: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills

Olympic Games

EXAMPLE 1 Comparing Decimals

To determine which race time given above is faster, compare 22.5 and 22.05.

In the 1968 Summer Olympics, Irena Szewinska of Poland won the women’s 200 meter dash with a time of 22.5 seconds. In 2004, Veronica Campbell of Jamaica won the event with a time of 22.05 seconds. Whose time is faster?

22.5022.05

The tens’ and ones’ digits are the same.

Write a zero as a placeholder.

The tenths’ digits are different. 5 > 0, so 22.50 > 22.05.

Page 6: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite SkillsEXAMPLE 1

ANSWER

Because 22.5 > 22.05, Veronica Campbell’s time is faster.

Comparing Decimals

Page 7: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite SkillsGUIDED PRACTICE for Example 1

Copy and complete the statement using <, >, or =.

1. 30.12 ? 30.4

ANSWER <

2. 7.7 ? 7.70

ANSWER =

3. 5.701 ? 5.699

ANSWER >

Page 8: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills

SOLUTION

EXAMPLE 2 Ordering Decimals

Order 2.11, 2.21, 2, 2.06, and 2.24 from least to greatest.

On a number line, mark tenths between 2.0 and 2.3. Mark hundredths by dividing each tenth into ten equal parts. Then graph each number.

From least to greatest, the numbers are 2, 2.06, 2.11, 2.21, and 2.24.

ANSWER

Page 9: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills

SOLUTION

EXAMPLE 3 Rounding a Decimal

Round 7.126 to the nearest tenth.

7.126

ANSWER

The decimal 7.126 rounded to the nearest tenth is 7.1.

Because the hundredths’ digit is less than 5, round down and drop the remaining digits.

You want to round to the nearest tenth.

Page 10: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite SkillsGUIDED PRACTICE for Examples 2 and 3

Order the numbers from least to greatest.

4. 3.84, 4.4, 4.83, 3.48, 4.38

3.48, 3.84, 4.38, 4.4, 4.83ANSWER

5. 5.71, 5.8, 5.68, 5.79, 5.6

5.6, 5.68, 5.71, 5.79, 5.8ANSWER

Page 11: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite SkillsGUIDED PRACTICE

Round the number to the nearest hundredth.6. 34.0152

34.02ANSWER

7. 1.5034

1.50ANSWER

8. 22.6654

22.67ANSWER

9. 125.7049

125.70ANSWER

for Examples 2 and 3

Page 12: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills VOCABULARY CHECK

Copy and complete using a review word from the list below.

dividend, divisor, quotientANSWER

ANSWER round

1. In the division equation 42 6 = 7, 42 is called the

? , 6 is called the ? , and 7 is called the ? .

2. If you ? 1723 to the nearest hundred, you get 1700.

digit number line less than greater thanround dividend divisor quotientestimate

Page 13: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills

ANSWER digit

3. The ? in the tens’ place of the number 637 is 3.

Copy and complete using a review word from the list below.

digit number line less than greater thanround dividend divisor quotientestimate

VOCABULARY CHECK

Page 14: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills

Estimate the sum or difference.

ANSWER 1900

13,987+ 32,053

9. 54,036

ANSWER 100,000

8. 905

782

+ 179

SKILL CHECK

Page 15: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills

Estimate the sum or difference.

10. 2874 – 1951

ANSWER 1000

11. 26,780 – 17,702

ANSWER 9000

SKILL CHECK

Page 16: Prerequisite Skills SKILL CHECK Name: ______________Date: _______________ ____ hr MathMC2 Ch 2 Decimals NameDate _hr Mathsource NameDate _hr Mathsource.

Prerequisite Skills

ANSWER 56

ANSWER 10

12. 14 + 6 7

13. 12 2 + 4

Evaluate the expression.

ANSWER 33

5214. 2 4 +

15. 5 – 2 2

ANSWER 1

SKILL CHECK