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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 229 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.36 × 5 =
  2. 2.14 × 50 =
  3. 3.63 × 50 =
  4. 4.78 × 5 =
  5. 5.75 × 50 =
  6. 6.42 × 50 =
  7. 7.74 × 5 =
  8. 8.25 × 50 =
  9. 9.62 × 50 =
  10. 10.44 × 50 =
  11. 11.15 × 50 =
  12. 12.20 × 5 =
  13. 13.78 × 5 =
  14. 14.65 × 5 =
  15. 15.69 × 5 =
  16. 16.50 × 5 =
  17. 17.89 × 5 =
  18. 18.28 × 5 =
  19. 19.98 × 5 =
  20. 20.86 × 50 =
  21. 21.44 × 50 =
  22. 22.49 × 5 =
  23. 23.75 × 50 =
  24. 24.57 × 5 =
  25. 25.68 × 50 =
  26. 26.93 × 50 =
  27. 27.91 × 50 =
  28. 28.72 × 50 =
  29. 29.86 × 50 =
  30. 30.12 × 5 =
  31. 31.79 × 50 =
  32. 32.82 × 50 =
  33. 33.74 × 50 =
  34. 34.76 × 5 =
  35. 35.65 × 5 =
  36. 36.43 × 5 =
  37. 37.16 × 5 =
  38. 38.51 × 50 =
  39. 39.41 × 5 =
  40. 40.40 × 50 =

Answer key

  1. 180
  2. 700
  3. 3150
  4. 390
  5. 3750
  6. 2100
  7. 370
  8. 1250
  9. 3100
  10. 2200
  11. 750
  12. 100
  13. 390
  14. 325
  15. 345
  16. 250
  17. 445
  18. 140
  19. 490
  20. 4300
  21. 2200
  22. 245
  23. 3750
  24. 285
  25. 3400
  26. 4650
  27. 4550
  28. 3600
  29. 4300
  30. 60
  31. 3950
  32. 4100
  33. 3700
  34. 380
  35. 325
  36. 215
  37. 80
  38. 2550
  39. 205
  40. 2000

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