Estimate 8 x 64 by rounding off the first number up and the second number down
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estimate a product or quotient by first rounding each number to one non-zero digit. For example, to estimate 8,291 x 27, first round 8,291 down to 8,000, and round 27 up to 30, then multiply 8,000 x 30 to get 240,000.
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Answer:
600
Step-by-step explanation:
8 round off to up........10
64 round off to down.......60
10 x 60 = 600
the ans. is 600
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