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Place Value and Rounding
Decimals to Fractions
Add/Subtract Decimals
Multiplying Decimals
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100

What digit is in the hundredths place?

7,135.2755

7,135.2755

100

Convert the decimal to a fraction:

0.72

72/100 OR 18/25

100
2.6 + 37.4

40

100

(-9.72)(9.1)

-88.452

100

A circle has a radius of 2. Find the circumference. 

2(3.14)(2)=12.56 

200

What digit is in the ten thousandths place?

45,672.45678

45,672.45678

200

Convert the decimal to a fraction 32.187 (combine over a common denominator)

32,187/1,000

200

7.09 + 16.35

23.44

200

(-16.4)(-4.1)

67.24

200

A circle has a radius of 3. What is the area?

3.14(3)2  =28.26 

300

Write the decimal in expanded form:

32.187

30 + 2 + 1/10 + 8/100 +7/1,000

300

Convert the given decimal to a mixed number: 5.47

5 47/100

300

-5.45 + (-39.663)

-45.113

300

5.94 - (-1.2)(-1.8)2

5.94- (-1.2)(3.24)

5.94 + 3.888 =9.828

300

A circle has a diameter of 14 inches. What is the circumference?

2(3.14)(7) =43.96 

400

Round to the nearest thousandth: 71.2427

71.243

400
Convert the decimal to a mixed number: 76.459

76 459/1000

400

17.6 + |14.6 - 5.7|

26.5

400

(-8.1)(9.4) - 1.82

(-8.1)(9.4) - 3.24

-76.14 - 3.24 =-79.38 

400

A circle has a diameter of 16. What is the area?

(3.14)(8)2 =200.96

500

Round to the nearest hundredth: 54.7694

54.77

500

Convert the decimal to a fraction and reduce: .84

21/25

500

2.765 - (-7.6)

10.365

500

Given a=-2.5, b=-6.2, and c = 3.2, evaluate ab-c2

(-2.5)(-6.2)-(3.2)2 = 5.26

500

Sally has a pool that has a circumference of 50 feet. She wants to replace the stone along the edge, but wants to know the diameter of the pool. What is the diameter using pi=3.14 and the circumference equation? c=2(3.14)r

50=2(3.14)r

50=6.28r

50/6.28=r

50/6.28=7.962 

7.962(2)=15.924