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. 49 + 10 = ______
  2. 8 × 10 = ______
  3. 2 × 10 = ______
  4. 79 + 10 = ______
  5. 86 − 10 = ______
  6. 64 + 20 = ______
  7. 77 + 20 = ______
  8. 46 + 10 = ______
  9. 4 × 10 = ______
  10. 67 + 10 = ______
  11. 78 + 20 = ______
  12. 30 − 10 = ______
  13. 13 + 20 = ______
  14. 18 + 20 = ______
  15. 68 − 10 = ______
  16. 75 − 10 = ______
  17. 12 + 20 = ______
  18. 15 + 10 = ______
  19. 57 + 10 = ______
  20. 12 + 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath