Estimate the sum or difference by first rounding each value to the indicated place value. Then find the actual sum or difference.-7.122 + (-14.68)
round each to the nearest one
A. Estimate: -21; Actual: -21.802
B. Estimate: -22; Actual: -21.19
C. Estimate: -22; Actual: -21.802
D. Estimate: -21; Actual: -21.19
Answer: C
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?
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