module 2 lesson 19

Module 2 Lesson 19

Divide two- and three-digit dividends by multiples of 10 with single-digit quotients

and make connections to a written method.

• 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.

Common CoreStandards

Learning Targets

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

Activate Knowledge

908 ÷ 28

Round the divisor to the nearest 10

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908 ÷ 28

Name the multiple of 30 that’s closest to 908

908 ÷ 30

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908 ÷ 28

Below 900 ÷ 30, write the answer

908 ÷ 30

908 ÷ 28 ≈ 900 ÷ 30

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152 ÷ 33

Round the divisor to the nearest 10

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152 ÷ 33

Name the multiple of 30 that’s closest to 152

152 ÷ 30

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152 ÷ 33

Below 150 ÷ 30, write the answer

152 ÷ 30

152 ÷ 33 ≈ 150 ÷ 30

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398 ÷ 98

Round the divisor to the nearest 10

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398 ÷ 98

Name the multiple of 100 that’s closest to 398

398 ÷ 100

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398 ÷ 98

Below 398 ÷ 100, write the answer

398 ÷ 100

398 ÷ 98 ≈ 400 ÷ 100

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7,272 ÷ 81

Round the divisor to the nearest 10

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7,272 ÷ 81

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

7,272 ÷ 80

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7,272 ÷ 81

Below 7,200 ÷ 80, write the answer

7,272 ÷ 80

7,272 ÷ 80 ≈ 7,200 ÷ 80

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Count by nine.

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Count by nine tens.

When I raise my hand stop counting.

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Count by fours.

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Count by four tens.

When I raise my hand stop counting.

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Count by fives.

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Count by five tens.

When I raise my hand stop counting.

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On your whiteboards, skip count by:

21

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Correct your work

21

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Skip count again

21

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On your whiteboards, skip count by:

43

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Correct your work

43

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Skip count again

43

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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

Problem 1

70 ÷ 30

What is the divisor?

Learn

Problem 1

What multiple of 30 would makedivision easy?

70 ÷ 30

Learn

Problem 1

Show how to estimate the quotient

70 ÷ 30

Learn

Problem 1

Solve

70 ÷ 30

30 7 0

Learn

Problem 1

Check the answer

70 ÷ 30

30 7 0

Learn

Problem 2

430 ÷ 60

What is the divisor?

Learn

Problem 2

What multiple of 60 would makedivision easy?

430 ÷ 60

Learn

Problem 2

Show how to estimate the quotient

430 ÷ 60

Learn

Problem 2

Solve

430 ÷ 60

60 4 30

Learn

Problem 2

Check the answer

430 ÷ 60

60 4 30

Learn

Problem 2

572 ÷ 90

What is the divisor?

Learn

Problem 2

What multiple of 90 would makedivision easy?

572 ÷ 90

Learn

Problem 2

Show how to estimate the quotient

572 ÷ 90

Learn

Problem 2

Solve

572 ÷ 90

90 572

Learn

Problem 2

Check the answer

572 ÷ 90

90 572

Practice

Review