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. 79 + 20 = ______
  2. 38 + 20 = ______
  3. 87 + 10 = ______
  4. 5 × 10 = ______
  5. 9 × 10 = ______
  6. 41 − 10 = ______
  7. 69 + 10 = ______
  8. 94 − 10 = ______
  9. 45 + 20 = ______
  10. 13 + 10 = ______
  11. 15 + 20 = ______
  12. 21 + 20 = ______
  13. 7 × 10 = ______
  14. 87 − 10 = ______
  15. 29 − 10 = ______
  16. 6 × 10 = ______
  17. 75 + 10 = ______
  18. 78 + 10 = ______
  19. 63 + 10 = ______
  20. 52 + 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath