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. 39 − 10 = ______
  2. 67 − 10 = ______
  3. 74 + 10 = ______
  4. 87 + 10 = ______
  5. 9 × 10 = ______
  6. 68 − 10 = ______
  7. 20 + 10 = ______
  8. 86 + 10 = ______
  9. 74 + 20 = ______
  10. 86 − 10 = ______
  11. 19 + 10 = ______
  12. 85 + 20 = ______
  13. 70 + 10 = ______
  14. 56 + 20 = ______
  15. 33 + 10 = ______
  16. 37 − 10 = ______
  17. 12 + 10 = ______
  18. 63 + 10 = ______
  19. 16 + 10 = ______
  20. 14 + 20 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath