module 2 lesson 20 divide two- and three-digit dividends by two-digit divisors with single-digit...
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Module 2 Lesson 20
Divide two- and three-digit dividends by two-digit divisors 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 two-digit divisors with single-digit quotients and make connections to a written method.
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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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607 ÷ 19
Round the divisor to the nearest 10
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607 ÷ 19
Name the multiple of 20 that’s closest to 607
607 ÷ 20
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607 ÷ 19
Below 600 ÷ 20, write the answer
607 ÷ 20
607 ÷ 19 ≈ 600 ÷ 20
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123 ÷ 24
Round the divisor to the nearest 10
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123 ÷ 24
Name the multiple of 20 that’s closest to 123
123 ÷ 20
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123 ÷ 24
Below 120 ÷ 20, write the answer
123 ÷ 20
123 ÷ 24 ≈ 120 ÷ 20
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891 ÷ 96
Round the divisor to the nearest 10
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891 ÷ 96
Name the multiple of 100 that’s closest to 891
891 ÷ 100
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891 ÷ 96
Below 900 ÷ 100, write the answer
891 ÷ 100
891 ÷ 96 ≈ 900 ÷ 100
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5,482 ÷ 62
Round the divisor to the nearest 10
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5,482 ÷ 62
Name the multiple of 60 that’s closest to 5,482
5,482 ÷ 60
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5,482 ÷ 62
Below 5,400 ÷ 60, write the answer
5,482 ÷ 60
5,482 ÷ 60 ≈ 5,400 ÷ 60
Solve using standard algorithm.Check answer by multiplying and Adding
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73 ÷ 50
Solve using standard algorithm.Check answer by multiplying and Adding
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70 ÷ 30
Solve using standard algorithm.Check answer by multiplying and Adding
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157 ÷ 30
Solve using standard algorithm.Check answer by multiplying and Adding
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432 ÷ 70
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Billy has 2.4 m of ribbon for crafts. He wants to share it evenly with 12 friends. How many centimeters of
ribbon would 7 friends get?
Learn
Problem 1
72 ÷ 21
What is the whole?
Learn
Problem 1
What multiple of 20 would makedivision easy?
72 ÷ 21
Learn
Problem 1
Solve
72 ÷ 21
21 7 2
Learn
Problem 1
Check
72 ÷ 21
21 7 2
Problem 2
94 ÷ 43
Teamwork
• Round the divisor. Find a multiple of the divisor that makes the division easy. Estimate the quotient. Solve using the standard algorithm.
• Check the answer
Learn
Problem 3
84 ÷ 23
Find a multiple of 20 that wouldmake solving this problem easy
Problem 4
57 ÷ 29
• Round the divisor. Find a multiple of the divisor that makes the division easy. Estimate the quotient. Solve using the standard algorithm.
• Check the answer
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Learning Targets