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Features
- 10 ways to add without a calculator
- 10 ways to subtract without a calculator
- 10 ways to divide without a calculator
- 10 ways to multiply without a calcultor
- 10 ways to estimate when multiplying
- 10 ways to estimate when dividing
- ans much, much, more
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Details were last updated on Nov 18, 2024 12:42 +08.
