Review
Multiplication
Powers of 10
100

Write this number in word form (spelling counts) 

5,321.324 

five thousand three hundred twenty one and three hundred twenty four thousandths 

100

15 x 17

105

100
Write this number in exponential form 


1,000,000,000 

109

200

Sammy used a coupon when she bought her new shirt. The original price was $13.00. Sammy's coupon saved her $2.44. How much did Sammy pay for the shirt? 

$10.56

200

A cake is cut into 12 equally-sized pieces. If each piece of cake has 326 calories, how many calories are there in the whole cake?

3,912 calories

200

3 x 107

30,000,000

300

Tanya measured her pencil and found it was 2.8369cm long. What is the length of her pencil rounded to the nearest hundredth

2.84 cm 

300

Alex threw a baseball 18 yards. There are 36 inches in a yard. How many inches did Alex throw the baseball?

648 inches 

300

Which expression is equal to 70,000? 

a. 7 x 10

b. 7 x 1000 

c. 1 x 107

d. 7 x 101

a

400

Describe the relationship of the underlined numbers in two different ways.  

14,673

15,481

The value of the digit 4 in the thousands place is 10x the value of the digit 4 in the hundreds place. 

The value of the digit 4 in the hundreds place is 1/10 the value of the digit 4 in the thousands place.

400

Peaches are on sale for $1.75 per pound.  You buy 2.2 pounds of peaches to make a peach pie.  How much money do you spend on peaches? 

$3.85

400

Consider the number 3. Which statements are correct? Select two that apply.

a. To multiply the number by 103 place 3 zeros to the end of the number.

b.To multiply the number by 10place 4 zeros to the end of the number.

c. To multiply the number by 1011, place 12 zeros to the end of the number.

d. To multiply the number by 1012, place 8 zeros to the end of the number.


a and b 

500

Surprise: Not Review :) 

Sophie played soccer for 14 minutes. Jessie played soccer for 2.5 times longer than Sophie played. How long, in minutes, did Sophie and Jessie play soccer altogether?



 (2.5 x 14) = 35 

14 + 35 = 49


500

Haley and John both plan to buy a $55.00 video game separately. Haley currently has $6.00 and will save $3.00 per week. John currently has $4.00 and will save $5.00 per week. How much money does each person still need to save after 4 weeks? Show and explain how you determined your answers.

Haley (3 x 4) = 12 + 6 = 18, 55-18 = 37 dollars  

John (5 x 4) = 20 + 4 = 24, 55-24= 31 dollars 

500

Surprise: Not powers of 10 :) 

Some students are measuring the length of two books. Each science book is 6.45 inches long. Each math book is 12.4 inches long. What is the total length of 5 science books AND 13 math books?

6.45 x 5 =32.25 

12.4 x 13 161.2 

Total length= 193.45 inches 

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