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13C Division: Relate Division and Subtraction Subtraction is another way that some textbooks are using to teach the concept of division. When working with the problem 12 divided by 3, the most common way is to circle "how many groups" of 3 are in 12. In this method, the student starts by subtracting 3 form 12 until they reach 0. Since we can subtract 3 from 12 a total of 4 times, this tells us that 12 divided by 3 equals 4. Sometimes you will encounter a student who has significant difficulty with the normal way of doing division, If this is the case, then certainly try this way. |
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Look at the subtraction sentences. Answer the questions below. |
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12 – 3 = 9 |
9 – 3 = 6 |
6 – 3 = 3 |
3 – 3 = 0 |
| How many times was 3 subtracted? | |||
| 3 was subtracted ______ times. | |||
This
tells you that there are 4 groups of 3 in 12. |
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