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Estimate Sums::

Use rounding or compatible numbers to estimate the sum.

222
+
203

2 Answers

2 votes

Answer:

425

Explanation:

just stack then and 2+2=4, 2+0=2, last 2+3=5 and done

User Rtalbot
by
7.9k points
1 vote

Answer:

225

Explanation:

The rounding system is used by rounding the numbers so by rounding the method would be:


222=200 after-rounding\\203=200 after rounding\\rounding sum=220

And compatible numbers would be rounding to the nearest five:


222=220 after-rounding\\203=205 after rounding\\rounding sum=225

So the compatible numbers gives you the exact answer but it´s not always this way.

User JotaBe
by
8.8k points

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