Estimate High And Low - Worksheet With Answers
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1
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Date
Estimate High and Low
Compatible numbers are two numbers that form a basic division fact. For example, 8 and
56 are compatible numbers for 56
8
7.
The table below shows four estimates for 77,000
24. Estimate the quotient for each set
of compatible dividends and divisors, and tell whether the result is an overestimate or an
underestimate.
Rounding
Compatible
Compatible
Estimated
Over or
Direction
Dividend
Divisor
Quotient
Under?
Up
Down
Up
Down
Up/Down
80,000
–
–
20
Down/Up
–
75,000
25
–
Up/Up
90,000
–
30
–
Down/Down
–
70,000
–
20
One of the rounding direction choices guarantees an overestimate and one guarantees
1.
an underestimate. Identify each and explain.
Extend It What rounding direction and compatible dividend and divisor combination
2.
that is not shown in the table above would provide the closest estimate to the actual
quotient?
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