Mathematics, 15.02.2021 01:10 sacoyia27

Calculations with whole numbers 20
Add or subtract the following without using a calculator. Check your answers using the
method of estimation:
a) 98 +17
b) 154 + 289
c) 890 + 855
d) 176 +239
e) 482 - II
f) 597 - 249
g) 687-190
b) 284 - 179
i) 6 248 -4 555

Answers: 3

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Calculations with whole numbers 20
Add or subtract the following without using a calculator. C...