Multiplication and Division by Powers of 10
Multiplication of Decimals
Division
Number Stories
Decimals
100
12.8/10^1
What is 1.28?
100
1.6 X 8
What is 12.8?
100
1/3 divided by 4
What is 1/12?
100
Gianna is making two different salads. One calls for 3 3/4 cups of spinach. The other calls for 2 2/3 cups of spinach. How much spinach does Gianna need?
What is 5 17/12 or 6 5/12 cups of spinach?
100
Write <,>, or = 3.26 _____ 3.199
What is >?
200
12.8 X 10^2
What is 1,280?
200
53.7 X 98.3
What is 5278.71?
200
7856/42
What is 187 R 2 or 187 2/42 or 187 1/21?
200
Julianne has 12 bags of confetti to spread on 16 tables. She wants to put the same amount of confetti on each table. How much of one bag of confetti should she put on each table?
What is 12/16 or 3/4 of a bag?
200
Write in expanded form: .817
What is .8 + .01 + .007?
300
5.7/10^2
What is .057?
300
12.6 X 8.7
What is 109.62?
300
8.46/3
What is 2.82?
300
A house is 50 feet long and 30 feet high with ceilings that are 9 feet tall. What is the volume of the interior?
What is 13,500 cubic feet?
300
62.79 + 9.26
What is 72.05?
400
5.7 X 10^3
What is 5700?
400
1.95 X 17.2?
What is 33.54?
400
6.3/.9
What is 7?
400
A rectangular one story house covers an area of 3,700 square feet. The ceilings are 8 feet high. What is the volume of the interior of the house?
What is 29600 cubic feet?
400
186.03-57.38
What is 128.65?
500
12.8/10^3
What is .0128?
500
52.3 X 7.9
What is 413.17?
500
150/31
What is 4 26/31 or 4 R 26?
500
Write a number story that can be solved using the division problem: four divided by five equals four-fifths.
What is answers may vary
500
374.4-139.68
What is 234.72?