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Review: Long Division of Whole Numbers - PowerPoint PPT Presentation

Review: Long Division of Whole Numbers. Example: 522 12 Write the quotient as a mixed number. Divide: how many times does 12 go into 52 without going over?. Divide: how many times does 12 go into 52 without going over?. Divide: how many times does 12 go into 52 without going over?

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Review:Long Division of Whole Numbers

Example:

52212

Write the quotient as a mixed number.

Multiply 412:

Multiply 412:

Multiply 412:

Here we subtract:

Multiply 412:

Here we subtract:

Divide: 12 into 44: over?

Multiply:

Divide: 12 into 44: over?

Multiply:

Subtract:

Divide:

Multiply:

Subtract:

As we have 8 pizzas, or whatever, leftover to divide among 12 people, each person gets an additional 8/12:

As we have 8 pizzas, or whatever, leftover to divi de among 12 people, each person gets an additional 8/12:

As we have 8 pizzas, or whatever, leftover to divi de among 12 people, each person gets an additional 8/12:

Note that the fraction part is

the remainder

the divisor .

Reducing: 12 people, each person gets an additional 8/12:

Badda-Bing, Baby! That’s all there is to it. 12 people, each person gets an additional 8/12:

Example 2: 6530 12 people, each person gets an additional 8/12:15

Divide: 15 goes into 65… 12 people, each person gets an additional 8/12:

Divide: 15 goes into 65 4 times 12 people, each person gets an additional 8/12:

Divide: 15 goes into 65 4 times 12 people, each person gets an additional 8/12:

Multiply:

Divide: 15 goes into 65 4 times 12 people, each person gets an additional 8/12:

Multiply:

Subtract:

Divide: 15 goes into 53 3 times 12 people, each person gets an additional 8/12:

Divide: 15 goes into 53 3 times 12 people, each person gets an additional 8/12:

Multiply:

Divide: 15 goes into 53 3 times 12 people, each person gets an additional 8/12:

Multiply:

Subtract:

Divide: 15 goes into 80 5 times 12 people, each person gets an additional 8/12:

Divide: 15 goes into 80 5 times 12 people, each person gets an additional 8/12:

Multiply:

Divide: 15 goes into 80 5 times 12 people, each person gets an additional 8/12:

Multiply:

Subtract:

We’re done when this difference, 5, is smaller than the divisor, 15. So, closing the deal…and reducing…

We’re done when this difference, 5, is smaller than the divisor, 15. So, closing the deal…and reducing…

Finis divisor, 15. So, closing the deal…and reducing…