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. 73 + 20 = ______
  3. 81 + 20 = ______
  4. 75 + 10 = ______
  5. 86 + 20 = ______
  6. 20 + 10 = ______
  7. 5 × 10 = ______
  8. 27 + 20 = ______
  9. 21 + 20 = ______
  10. 72 + 20 = ______
  11. 37 + 20 = ______
  12. 91 − 10 = ______
  13. 2 × 10 = ______
  14. 28 + 20 = ______
  15. 61 + 20 = ______
  16. 89 + 20 = ______
  17. 67 + 10 = ______
  18. 88 − 10 = ______
  19. 73 + 10 = ______
  20. 3 × 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath