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. 50 + 20 = ______
  2. 75 + 10 = ______
  3. 39 − 10 = ______
  4. 40 + 20 = ______
  5. 70 + 10 = ______
  6. 30 + 10 = ______
  7. 18 + 10 = ______
  8. 77 + 10 = ______
  9. 79 + 20 = ______
  10. 8 × 10 = ______
  11. 4 × 10 = ______
  12. 89 + 20 = ______
  13. 24 − 10 = ______
  14. 21 + 20 = ______
  15. 22 + 10 = ______
  16. 31 + 10 = ______
  17. 85 + 10 = ______
  18. 2 × 10 = ______
  19. 33 + 20 = ______
  20. 48 + 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath