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Reteach: Division & Multiples
Multiplication and division are inverse operations. This means that one can be "undone" by the other. Because they are related in this way, you can use division to decide whether or not one number is a multiple of another.
To decide whether 18 is a multiple of 5, determine whether or not 5 can divide evenly into 18.
Since there is a remainder of 3, 5 does not divide evenly into 18.
So,18 is not a multiple of 5.
To decide whether 36 is a multiple of 9, determine whether or not 9 can divide evenly into 36.
Since there is no remainder, 9 does divide evenly into 36.
So, 36 is a multiple of 9.
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Reteach: Guided Practice
Multiples are skip-counting numbers, or "count by" numbers. To find the multiples of five, we count by 5s. To find the multiples of ten, we count by 10s. To find the multiples of twelve, we count by 12s, and so on.
1. Use division to determine if 21 is a multiple of 3.
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Does 3 divide evenly into 21, with no remainder? Yes
Is 21 a multiple of 3? Yes
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2. Use division to determine if 19 is a multiple of 6. |
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Does 6 divide evenly into 19, with no remainder? No
Is 19 a multiple of 6? No |
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Independent Practice: Division & Multiples
Use division to answer the questions below.
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a. Is 46 a multiple of 12? no |
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b. Is 18 a multiple of 3? yes |
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c. Is 29 a multiple of 4? no |
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d. Is 55 a multiple of 8? no |
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e. Is 42 a multiple of 7? yes |
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f. Is 60 a multiple of 12? yes |
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g. Is 32 a multiple of 4? yes |
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h. Is 78 a multiple of 11? no |
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Related Resources
The various resources listed below are aligned to the same standard, (4OA04) taken from the CCSM (Common Core Standards For Mathematics) as the Factors and multiplesWorksheet shown above.
Find all factor pairs for a whole number in the range 1 to 100. Recognize that a ...
Charts
Games
Target Game
Number lines
Skip Counting - By 2, 3, 4, 5, & 6 (small marks at 1s, large marks at intervals and no numbers)- Skip Counting - By 7, 8, 9, 11, & 12 (small marks at 1s, large marks at intervals and no numbers)
- Skip Counting - By 11 (small marks at 1s, large marks every 11 and no numbers)
- Skip Counting - By 12 (small marks at 1s, large marks every 12 and no numbers)
Page
Worksheets
