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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 51 · 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. 1.77 × 5 =
  2. 2.63 × 5 =
  3. 3.43 × 5 =
  4. 4.91 × 5 =
  5. 5.59 × 5 =
  6. 6.86 × 50 =
  7. 7.88 × 50 =
  8. 8.17 × 50 =
  9. 9.23 × 50 =
  10. 10.25 × 5 =
  11. 11.44 × 50 =
  12. 12.84 × 50 =
  13. 13.36 × 5 =
  14. 14.14 × 5 =
  15. 15.58 × 50 =
  16. 16.72 × 5 =
  17. 17.20 × 50 =
  18. 18.48 × 50 =
  19. 19.94 × 50 =
  20. 20.20 × 5 =
  21. 21.56 × 5 =
  22. 22.82 × 5 =
  23. 23.53 × 5 =
  24. 24.31 × 5 =
  25. 25.73 × 50 =
  26. 26.23 × 50 =
  27. 27.82 × 50 =
  28. 28.42 × 50 =
  29. 29.27 × 50 =
  30. 30.85 × 5 =
  31. 31.31 × 50 =
  32. 32.65 × 50 =
  33. 33.75 × 5 =
  34. 34.94 × 5 =
  35. 35.49 × 50 =
  36. 36.68 × 50 =
  37. 37.60 × 5 =
  38. 38.28 × 5 =
  39. 39.39 × 5 =
  40. 40.37 × 5 =

Answer key

  1. 385
  2. 315
  3. 215
  4. 455
  5. 295
  6. 4300
  7. 4400
  8. 850
  9. 1150
  10. 125
  11. 2200
  12. 4200
  13. 180
  14. 70
  15. 2900
  16. 360
  17. 1000
  18. 2400
  19. 4700
  20. 100
  21. 280
  22. 410
  23. 265
  24. 155
  25. 3650
  26. 1150
  27. 4100
  28. 2100
  29. 1350
  30. 425
  31. 1550
  32. 3250
  33. 375
  34. 470
  35. 2450
  36. 3400
  37. 300
  38. 140
  39. 195
  40. 185

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