- Subtraction Practice
- 1st: Use numbers from 1 to .
- Use 3, 5, 10, or 20, for example.
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- 2nd: Type in one or both numbers. OR
- Press the "Number" button(s).
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- 3rd: Mentally subtract the smaller number from the
- larger number to compute the
difference.
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- 4th: Press the "Difference" button to see the correct answer.
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- 5th: Repeat as desired.
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