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. 75 + 20 = ______
  2. 78 + 10 = ______
  3. 87 + 10 = ______
  4. 77 + 10 = ______
  5. 33 + 20 = ______
  6. 5 × 10 = ______
  7. 73 − 10 = ______
  8. 23 + 20 = ______
  9. 30 + 10 = ______
  10. 97 − 10 = ______
  11. 24 + 20 = ______
  12. 7 × 10 = ______
  13. 68 + 10 = ______
  14. 85 + 20 = ______
  15. 42 + 20 = ______
  16. 71 + 10 = ______
  17. 9 × 10 = ______
  18. 18 + 10 = ______
  19. 43 + 10 = ______
  20. 99 − 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath