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. 11 + 20 = ______
  2. 34 + 20 = ______
  3. 50 + 20 = ______
  4. 49 + 10 = ______
  5. 48 + 10 = ______
  6. 78 + 10 = ______
  7. 3 × 10 = ______
  8. 69 − 10 = ______
  9. 22 + 10 = ______
  10. 6 × 10 = ______
  11. 43 + 10 = ______
  12. 17 + 10 = ______
  13. 1 × 10 = ______
  14. 9 × 10 = ______
  15. 8 × 10 = ______
  16. 18 + 20 = ______
  17. 85 − 10 = ______
  18. 51 + 20 = ______
  19. 32 + 10 = ______
  20. 69 + 20 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath