Decimal Review

Place Value and Rounding

100

What is the place value of the "3" in the number below?

845.2832

thousandths

200

What is the place value of the "9" in the number below?

94,387.45

ten thousand

300

Round this number to the nearest hundredth:

84.4782

84.48

400

Round this number to the nearest whole number:

12.8903

13.0

500

Find the sum, then round your answer to the nearest 10th:

4.58 + 19.87

24.5

Order of Operations

100

9 + 7 x 3 - 5

25

200

19 + (4² - 5)

 

30

300

5³ - (8 + 9 x 8) 

45

400

1.4 + 1.3 x 8 - 7.1

4.7

500

6² - (28/4 + 11)

18

Addition / Subtraction

100

12.9 + 27.97

40.87

200

17 - 13.0879

3.9121

300

12.897 + 13.45 + 7.0892

33.4362

400

What is the missing number?

______ - 8.97 = 24.927

33.897

500

11.4 - 7.03 + 6.98

11.35

Multiplication / Division

100

What is the best estimate of the product?

79 x 31

2,400

200

Find the product:

8.7 x 9

78.3

300

How many digits will be after the decimal for this product?

78.6 x .89

3

400

Find the quotient:

21.6 / 18

1.2

500

Find the quotient:

169.1 / 19

8.9

Story Problems

100

Jayon ran 100 yards in 12.8 seconds.  Malcolm's time in the same race was 1.04 seconds faster.  What was Malcolm's time?

11.76 seconds

200

Olyver averages 9.3 pts per game.  Over the course of a 35 game season, how many points can Olyver expect to score?  Round your answer to the nearest whole number.

326 points

300

Zion scored 12 points in her basketball game on Saturday.  She scored a fourth of her teams points.  How many points did her team score?

48 points

400

Caroline and three of her family members went out for pizza on Friday night.  They each ordered a side salad and shared one extra large pizza.  The pizza cost $24.78 and the total bill was $43.46.  What was the cost of EACH salad?

$4.67

500

Rikki's dog weighs 23.48 pounds.  Rikki's dog weighs exactly a third of what Hunter's dog weighs.  How much does Rhett's dog weigh?  

70.44 pounds