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Reteach: Multiplicative Comparison Multiplier Unknown




Reteach: Guided Practice

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Independent Practice: Multiplicative Comparison Multiplier UnknownSolve each problem below by identifying the number in one set, and the number in the second set, which is a multiple of the first. Divide the second set by the first set. Go back to the problem to make sure you have answered the question being asked, and that your answer makes sense. 
The plane goes 700 miles an hour. The car goes 50 miles an hour. How many times faster than the car is the plane? The number in one set is 700 . The number in the second set is 50 . 700 ÷ 50 = 14 The plane is 14 times faster than the car. If you multiply the speed of the car by your answer, you should get the speed of the plane. Is your answer reasonable?

Eric has 9 video games. Bryan has 54 video games. How many times more video games does Bryan have than Eric? The number in one set is 54 . The number in the second set is 9 . 54 ÷ 9 = 6 Bryan has 6 times as many video games as Eric. If you multiply the number of video games that Eric has by your answer, you should get the number of video games that Bryan has. Is your answer reasonable?

Shannon is 37 inches tall. Her teenaged brother, Rick, is 74 inches tall. How many times as tall as Shannon is Rick? The number in one set is 74 . The number in the second set is 37 . 74 ÷ 37 = 2 Rick is 2 times as tall as Shannon. If you multiply the number of inches in Shannon's height by your answer, you should get the number of inches in Rick's height. Is your answer reasonable? 
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The various resources listed below are aligned to the same standard, (4OA02) taken from the CCSM (Common Core Standards For Mathematics) as the Word problems Worksheet shown above.
Multiply or divide to solve word problems involving multiplicative comparison, e.g., ...
Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:
Use the four operations with whole numbers to solve problems