Cálculos mentales 1
- 1. 5 X 10 - 5 / 9 X 8 + 20 - 8 + 3 =
- 2. 9 X 9 + 9 - 30 / 6 X 9 - 40 + 8 =
- 3. 80 / 10 X 7 - 2 / 6 + 11 X 2 - 3 =
- 4. 24 + 6 / 5 x 7 - 4 + 7 / 9 + 15 =
- 5. 30 - 5 + 8 X 2 + 4 - 6 / 8 X 10 =
- 6. 9 X 6 + 6 / 10 X 8 / 8 X 5 - 4 =
- 7. 9 + 10 - 5 X 2 / 2 + 6 - 10 X 2 =
- 8. 28 / 4 X 9 + 7 - 5 - 1 / 8 X 3 =
- 9. 90 / 10 X 2 + 2 - 3 + 8 / 5 X 7 =
- 10. 4 X 9 + 6 / 7 - 4 X 9 - 8 / 2 X 20 =
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