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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 801 · 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. 1.15 × 5 =
  2. 2.32 × 5 =
  3. 3.18 × 50 =
  4. 4.42 × 50 =
  5. 5.17 × 50 =
  6. 6.13 × 50 =
  7. 7.23 × 5 =
  8. 8.21 × 5 =
  9. 9.65 × 5 =
  10. 10.64 × 50 =
  11. 11.68 × 50 =
  12. 12.59 × 5 =
  13. 13.25 × 5 =
  14. 14.66 × 50 =
  15. 15.41 × 5 =
  16. 16.23 × 50 =
  17. 17.52 × 5 =
  18. 18.29 × 5 =
  19. 19.40 × 5 =
  20. 20.23 × 50 =
  21. 21.13 × 5 =
  22. 22.64 × 50 =
  23. 23.35 × 5 =
  24. 24.17 × 5 =
  25. 25.34 × 5 =
  26. 26.84 × 50 =
  27. 27.48 × 5 =
  28. 28.52 × 50 =
  29. 29.26 × 50 =
  30. 30.13 × 50 =
  31. 31.17 × 5 =
  32. 32.14 × 5 =
  33. 33.53 × 50 =
  34. 34.22 × 50 =
  35. 35.91 × 5 =
  36. 36.84 × 50 =
  37. 37.34 × 5 =
  38. 38.65 × 50 =
  39. 39.27 × 5 =
  40. 40.50 × 5 =

Answer key

  1. 75
  2. 160
  3. 900
  4. 2100
  5. 850
  6. 650
  7. 115
  8. 105
  9. 325
  10. 3200
  11. 3400
  12. 295
  13. 125
  14. 3300
  15. 205
  16. 1150
  17. 260
  18. 145
  19. 200
  20. 1150
  21. 65
  22. 3200
  23. 175
  24. 85
  25. 170
  26. 4200
  27. 240
  28. 2600
  29. 1300
  30. 650
  31. 85
  32. 70
  33. 2650
  34. 1100
  35. 455
  36. 4200
  37. 170
  38. 3250
  39. 135
  40. 250

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