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. 12 + 20 = ______
  2. 49 + 10 = ______
  3. 90 − 10 = ______
  4. 69 + 20 = ______
  5. 65 + 20 = ______
  6. 24 + 10 = ______
  7. 48 − 10 = ______
  8. 60 + 20 = ______
  9. 82 + 20 = ______
  10. 81 + 20 = ______
  11. 94 − 10 = ______
  12. 28 + 10 = ______
  13. 13 + 10 = ______
  14. 27 − 10 = ______
  15. 4 × 10 = ______
  16. 40 − 10 = ______
  17. 84 + 20 = ______
  18. 30 − 10 = ______
  19. 9 × 10 = ______
  20. 47 + 20 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath