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. 78 + 20 = ______
  2. 87 + 10 = ______
  3. 3 × 10 = ______
  4. 40 + 20 = ______
  5. 77 + 20 = ______
  6. 71 − 10 = ______
  7. 44 + 10 = ______
  8. 4 × 10 = ______
  9. 7 × 10 = ______
  10. 39 + 20 = ______
  11. 98 − 10 = ______
  12. 23 + 20 = ______
  13. 49 − 10 = ______
  14. 17 + 20 = ______
  15. 70 + 20 = ______
  16. 21 + 10 = ______
  17. 79 + 10 = ______
  18. 64 + 20 = ______
  19. 34 + 10 = ______
  20. 81 + 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath