Matemáticas mentales Worksheet

Recommended for 1er grado — 5to grado

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Matemáticas mentales Worksheet

Name: ____________________Date: ____________

Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.

20 problems

  1. 23 + 10 = ______
  2. 12 + 10 = ______
  3. 9 × 10 = ______
  4. 5 × 10 = ______
  5. 13 + 20 = ______
  6. 98 − 10 = ______
  7. 56 + 10 = ______
  8. 23 + 20 = ______
  9. 71 − 10 = ______
  10. 66 + 10 = ______
  11. 69 + 10 = ______
  12. 88 + 20 = ______
  13. 13 + 10 = ______
  14. 89 + 20 = ______
  15. 39 − 10 = ______
  16. 31 − 10 = ______
  17. 77 + 20 = ______
  18. 2 × 10 = ______
  19. 1 × 10 = ______
  20. 29 + 20 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath