Without using a calculator
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19.4 + 2.29 = 18.29 - 16.8 = 72 � 2 = |
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19.4 + 2.29 = 21.69
18.29 - 16.8 = 1.49
72 � 2 = 36 |
Practicing calculations like these can help to improve your thinking
skills.
Look for quick ways to find the answers. Shortcuts to the solution
not only speed you up but also make it less likely that a mistake is made.
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