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Module 2 Lesson 18. Use basic facts to estimate quotients with two-digit divisors. Common Core Standards.
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Module 2 Lesson 18 • Use basic facts to estimate quotients with two-digit divisors.
Common Core Standards 5.NBT.1 Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left.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.
I can use basic facts to estimate quotients with two-digit divisors. Learning Targets
Activate Knowledge Count by six.
Activate Knowledge Count by six tens. When I raise my hand stop counting.
Activate Knowledge Count by eights.
Activate Knowledge Count by eight tens. When I raise my hand stop counting.
Activate Knowledge Count by nines.
Activate Knowledge Count by nine tens. When I raise my hand stop counting.
Activate Knowledge Write the division sentence 12,000 ÷ 40
Activate Knowledge Write as a 2 step division sentence taking out the ten 12,000 ÷ 40
Activate Knowledge Rewrite after solving the first part of the division problem 12,000 ÷ 40 12,000 ÷ 10 ÷ 4
Activate Knowledge Write the answer 12,000 ÷ 40 12,000 ÷ 10 ÷ 4 1200 ÷ 4
Activate Knowledge Write the division sentence 12,000 ÷ 400
Activate Knowledge Write as a 2 step division sentence taking out the ten 12,000 ÷ 400
Activate Knowledge Rewrite after solving the first part of the division problem 12,000 ÷ 400 12,000 ÷ 100 ÷ 4
Activate Knowledge Write the answer 12,000 ÷ 4000 12,000 ÷ 100 ÷ 4 120 ÷ 4
Activate Knowledge Write the division sentence 12,000 ÷ 4000
Activate Knowledge Write as a 2 step division sentence taking out the ten 12,000 ÷ 4000
Activate Knowledge Rewrite after solving the first part of the division problem 12,000 ÷ 4000 12,000 ÷ 1000 ÷ 4
Activate Knowledge Write the answer 12,000 ÷ 4000 12,000 ÷ 1000 ÷ 4 12 ÷ 4
Activate Knowledge Write the division sentence 360,000 ÷ 6,000
Activate Knowledge Write as a 2 step division sentence taking out the ten 360,000 ÷ 6,000
Activate Knowledge Rewrite after solving the first part of the division problem 360,000 ÷ 6,000 360,000 ÷ 1000 ÷ 6
Activate Knowledge Write the answer 360,000 ÷ 6,000 360,000 ÷ 1000 ÷ 6 360 ÷ 6
Activate Knowledge Write the division sentence 490,000 ÷ 700
Activate Knowledge Write as a 2 step division sentence taking out the ten 490,000 ÷ 700
Activate Knowledge Rewrite after solving the first part of the division problem 490,000 ÷ 700 490,000 ÷ 100 ÷ 7
Activate Knowledge Write the answer 490,000 ÷ 700 490,000 ÷ 100 ÷ 7 4900 ÷ 7
Activate Knowledge Write the division sentence 640,000 ÷ 80
Activate Knowledge Write as a 2 step division sentence taking out the ten 640,000 ÷ 80
Activate Knowledge Rewrite after solving the first part of the division problem 640,000 ÷ 80 640,000 ÷ 10 ÷ 8
Activate Knowledge Write the answer 640,000 ÷ 80 640,000 ÷ 10 ÷ 8 64,000 ÷ 8
Activate Knowledge Round the divisor to the nearest 10 812 ÷ 39
Activate Knowledge Name the multiple of 40 that’s closest to 812 812 ÷ 39 812 ÷ 40
Activate Knowledge Below 800 ÷ 40, write the answer 812 ÷ 39 812 ÷ 40 812 ÷ 39 ≈ 800 ÷ 40
Activate Knowledge Round the divisor to the nearest 10 183 ÷ 31
Activate Knowledge Name the multiple of 30 that’s closest to 183 183 ÷ 31 183 ÷ 30
Activate Knowledge Below 180 ÷ 30, write the answer 183 ÷ 31 183 ÷ 30 183 ÷ 31 ≈ 180 ÷ 30
Activate Knowledge Round the divisor to the nearest 10 437 ÷ 72
Activate Knowledge Name the multiple of 70 that’s closest to 437 437 ÷ 72 437 ÷ 70
Activate Knowledge Below 420 ÷ 70, write the answer 437 ÷ 72 437 ÷ 70 437 ÷ 72 ≈ 420 ÷ 70
Activate Knowledge Round the divisor to the nearest 10 823 ÷ 97
Activate Knowledge Name the multiple of 100 that’s closest to 823 823 ÷ 97 823 ÷ 100
Activate Knowledge Below 800 ÷ 100, write the answer 823 ÷ 97 823 ÷ 100 823 ÷ 97 ≈ 800 ÷ 100
Activate Knowledge Round the divisor to the nearest 10 8,191 ÷ 92
Activate Knowledge Name the multiple of 90 that’s closest to 8,191 8,191 ÷ 92 8,191 ÷ 90
Activate Knowledge Below 8100 ÷ 90, write the answer 8,191 ÷ 92 8,191 ÷ 90 8,191 ÷ 92 ≈ 8100 ÷ 90
Activate Knowledge Sandra bought 38 DVD movies for $874. Give an estimate of the cost of each DVD movie.