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Prompt Estimation before Exact Calculation
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ParaPro
PPM.162 Prompt Estimation before Exact Calculation
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On a map scale, 1 inch represents 12 miles. A route measures 7.8 inches. Which prompt best helps estimate the real distance first?
A
Which number tells the miles represented by 1 inch?
B
Can you multiply 7.8 by 12 exactly and place the decimal correctly, under the stated conditions, based on the given work.
C
If 7.8 inches is about 8 inches, should the distance be about 8 × 12, or 96 miles?
D
What exact distance does the scale calculation give?
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