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In order to simplify our calculations we try to add numbers that give us a round result.
Let's keep in mind that:
Now we have a more manageable exercise to solve:
300
Solve:
\( -5+4+1-3 \)
Strategic grouping makes mental math much easier! When you pair numbers that add to round totals like 170 or 130, you avoid messy calculations and reduce mistakes.
Look for pairs that create round numbers (ending in 0). In this problem, 113+57=170 and 59+71=130 both give clean totals that are easy to add together.
That's okay! Try pairing numbers that are close to each other or look for combinations that minimize carrying when adding. The goal is to make the math simpler.
Yes! You could add three or four numbers together if it helps. But pairing usually works best because it's easier to keep track of your calculations.
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