Divide two- and three-digit dividends by multiples of 10 with single-digit quotients and make connections to a written method.

Common Core
Standards
5.NBT.6 Find whole-number quotients of whole numbers with up to four-digit dividends and two- digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

Learning Targets
I can divide two- and three-digit dividends by multiples of 10 with singledigit quotients and make connections to a written method.

Activate
Knowledge
Round the divisor to the nearest 10
908 ÷ 28

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Knowledge
Name the multiple of 30 that’s closest to 908
908 ÷ 28
908 ÷ 30

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Knowledge
Below 900 ÷ 30, write the answer
908 ÷ 28
908 ÷ 30
908 ÷ 28 ≈ 900 ÷ 30

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Knowledge
Round the divisor to the nearest 10
152 ÷ 33

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Knowledge
Name the multiple of 30 that’s closest to 152
152 ÷ 33
152 ÷ 30

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Knowledge
Below 150 ÷ 30, write the answer
152 ÷ 33
152 ÷ 30
152 ÷ 33 ≈ 150 ÷ 30

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Knowledge
Round the divisor to the nearest 10
398 ÷ 98

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Knowledge
Name the multiple of 100 that’s closest to 398
398 ÷ 98
398 ÷ 100

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Knowledge
Below 398 ÷ 100, write the answer
398 ÷ 98
398 ÷ 100
398 ÷ 98 ≈ 400 ÷ 100

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Knowledge
Round the divisor to the nearest 10
7,272 ÷ 81

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Knowledge
Name the multiple of 80 that’s closest to 7,272
7,272 ÷ 81
7,272 ÷ 80

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Knowledge
Below 7,200 ÷ 80, write the answer
7,272 ÷ 81
7,272 ÷ 80
7,272 ÷ 80 ≈ 7,200 ÷ 80

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Knowledge
Count by nine.

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Knowledge
Count by nine tens.
When I raise my hand stop counting.

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Knowledge
Count by fours.

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Knowledge
Count by four tens.
When I raise my hand stop counting.

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Knowledge
Count by fives.

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Knowledge
Count by five tens.
When I raise my hand stop counting.

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Knowledge
On your whiteboards, skip count by:
21

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Knowledge
Correct your work
21

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Knowledge
Skip count again
21

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Knowledge
On your whiteboards, skip count by:
43

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Knowledge
Correct your work
43

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Knowledge
Skip count again
43

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Knowledge
At the Highland Falls pumpkin growing contest, the prize winning pumpkin contains 360 seeds. The proud farmer plans to sell his seeds in packs of 12.
How many packs can he make using all the seeds?

Learn
What is the divisor?
70 ÷ 30
Problem 1

Learn
What multiple of 30 would make division easy?
70 ÷ 30
Problem 1

Learn
Show how to estimate the quotient
70 ÷ 30
Problem 1

Learn
30 7 0
Solve
70 ÷ 30
Problem 1

Learn
30 7 0
Check the answer
70 ÷ 30
Problem 1

Learn
What is the divisor?
430 ÷ 60
Problem 2

Learn
What multiple of 60 would make division easy?
430 ÷ 60
Problem 2

Learn
Show how to estimate the quotient
430 ÷ 60
Problem 2

Learn
60 4 30
Solve
430 ÷ 60
Problem 2

Learn
60 4 30
Check the answer
430 ÷ 60
Problem 2

Learn
What is the divisor?
572 ÷ 90
Problem 2

Learn
What multiple of 90 would make division easy?
572 ÷ 90
Problem 2

Learn
Show how to estimate the quotient
572 ÷ 90
Problem 2

Learn
90 5 7 2
Solve
572 ÷ 90
Problem 2

Learn
90 5 7 2
Check the answer
572 ÷ 90
Problem 2

Practice

Review