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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 208 · 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. 1.30 × 5 =
  2. 2.27 × 50 =
  3. 3.19 × 5 =
  4. 4.81 × 50 =
  5. 5.70 × 50 =
  6. 6.68 × 50 =
  7. 7.75 × 5 =
  8. 8.14 × 5 =
  9. 9.77 × 5 =
  10. 10.60 × 5 =
  11. 11.76 × 5 =
  12. 12.63 × 5 =
  13. 13.25 × 50 =
  14. 14.53 × 50 =
  15. 15.53 × 50 =
  16. 16.17 × 5 =
  17. 17.14 × 50 =
  18. 18.44 × 50 =
  19. 19.94 × 5 =
  20. 20.79 × 50 =
  21. 21.46 × 50 =
  22. 22.89 × 5 =
  23. 23.14 × 5 =
  24. 24.78 × 50 =
  25. 25.77 × 50 =
  26. 26.58 × 5 =
  27. 27.40 × 50 =
  28. 28.63 × 5 =
  29. 29.25 × 5 =
  30. 30.18 × 5 =
  31. 31.70 × 5 =
  32. 32.61 × 50 =
  33. 33.16 × 50 =
  34. 34.27 × 5 =
  35. 35.70 × 5 =
  36. 36.52 × 50 =
  37. 37.40 × 50 =
  38. 38.31 × 50 =
  39. 39.25 × 50 =
  40. 40.45 × 50 =

Answer key

  1. 150
  2. 1350
  3. 95
  4. 4050
  5. 3500
  6. 3400
  7. 375
  8. 70
  9. 385
  10. 300
  11. 380
  12. 315
  13. 1250
  14. 2650
  15. 2650
  16. 85
  17. 700
  18. 2200
  19. 470
  20. 3950
  21. 2300
  22. 445
  23. 70
  24. 3900
  25. 3850
  26. 290
  27. 2000
  28. 315
  29. 125
  30. 90
  31. 350
  32. 3050
  33. 800
  34. 135
  35. 350
  36. 2600
  37. 2000
  38. 1550
  39. 1250
  40. 2250

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