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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 68 · 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. 1.35 × 5 =
  2. 2.98 × 5 =
  3. 3.53 × 50 =
  4. 4.19 × 5 =
  5. 5.96 × 50 =
  6. 6.48 × 50 =
  7. 7.24 × 5 =
  8. 8.76 × 5 =
  9. 9.67 × 5 =
  10. 10.51 × 50 =
  11. 11.85 × 5 =
  12. 12.97 × 5 =
  13. 13.45 × 5 =
  14. 14.50 × 5 =
  15. 15.15 × 50 =
  16. 16.86 × 50 =
  17. 17.41 × 50 =
  18. 18.17 × 50 =
  19. 19.78 × 50 =
  20. 20.12 × 50 =
  21. 21.31 × 5 =
  22. 22.98 × 50 =
  23. 23.15 × 5 =
  24. 24.97 × 5 =
  25. 25.24 × 5 =
  26. 26.38 × 5 =
  27. 27.22 × 5 =
  28. 28.32 × 5 =
  29. 29.79 × 50 =
  30. 30.49 × 5 =
  31. 31.65 × 5 =
  32. 32.17 × 50 =
  33. 33.28 × 5 =
  34. 34.63 × 50 =
  35. 35.71 × 5 =
  36. 36.43 × 50 =
  37. 37.24 × 50 =
  38. 38.43 × 5 =
  39. 39.74 × 5 =
  40. 40.44 × 50 =

Answer key

  1. 175
  2. 490
  3. 2650
  4. 95
  5. 4800
  6. 2400
  7. 120
  8. 380
  9. 335
  10. 2550
  11. 425
  12. 485
  13. 225
  14. 250
  15. 750
  16. 4300
  17. 2050
  18. 850
  19. 3900
  20. 600
  21. 155
  22. 4900
  23. 75
  24. 485
  25. 120
  26. 190
  27. 110
  28. 160
  29. 3950
  30. 245
  31. 325
  32. 850
  33. 140
  34. 3150
  35. 355
  36. 2150
  37. 1200
  38. 215
  39. 370
  40. 2200

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