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. 1 × 10 = ______
  2. 21 + 10 = ______
  3. 21 + 20 = ______
  4. 44 − 10 = ______
  5. 45 − 10 = ______
  6. 78 − 10 = ______
  7. 39 + 10 = ______
  8. 53 + 20 = ______
  9. 69 + 10 = ______
  10. 60 + 20 = ______
  11. 66 + 20 = ______
  12. 17 + 20 = ______
  13. 4 × 10 = ______
  14. 61 + 20 = ______
  15. 7 × 10 = ______
  16. 78 + 20 = ______
  17. 86 + 10 = ______
  18. 62 + 20 = ______
  19. 38 + 20 = ______
  20. 87 − 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath