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. 1 × 10 = ______
  2. 39 + 20 = ______
  3. 8 × 10 = ______
  4. 5 × 10 = ______
  5. 18 + 20 = ______
  6. 69 + 20 = ______
  7. 36 − 10 = ______
  8. 23 − 10 = ______
  9. 34 − 10 = ______
  10. 85 + 10 = ______
  11. 12 + 20 = ______
  12. 15 + 10 = ______
  13. 79 + 20 = ______
  14. 35 + 20 = ______
  15. 86 + 20 = ______
  16. 50 + 10 = ______
  17. 63 + 20 = ______
  18. 87 + 10 = ______
  19. 26 + 10 = ______
  20. 45 − 10 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath