Question

Exercise 3.7
Estimate each difference after rounding off the given numbers to the nearest hundreds.
Also find the actual difference. Check whether your approximation is accurate or not.
286 - 139
b. 145 – 112
894 - 539
d. 1168 - 1109
e. 3385 -2824
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Answer 1

Answer:

$289 - 139 = 150 = 100 \\ 145 - 112 = 33 = 10$