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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 416 · 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. 1.58 × 5 =
  2. 2.96 × 50 =
  3. 3.87 × 50 =
  4. 4.21 × 5 =
  5. 5.69 × 5 =
  6. 6.18 × 50 =
  7. 7.18 × 5 =
  8. 8.23 × 50 =
  9. 9.76 × 5 =
  10. 10.70 × 50 =
  11. 11.60 × 5 =
  12. 12.89 × 5 =
  13. 13.65 × 50 =
  14. 14.45 × 5 =
  15. 15.46 × 5 =
  16. 16.46 × 5 =
  17. 17.60 × 50 =
  18. 18.34 × 50 =
  19. 19.51 × 5 =
  20. 20.30 × 50 =
  21. 21.39 × 5 =
  22. 22.91 × 5 =
  23. 23.14 × 5 =
  24. 24.34 × 5 =
  25. 25.93 × 50 =
  26. 26.30 × 5 =
  27. 27.23 × 50 =
  28. 28.41 × 5 =
  29. 29.32 × 5 =
  30. 30.55 × 5 =
  31. 31.19 × 50 =
  32. 32.96 × 50 =
  33. 33.91 × 50 =
  34. 34.15 × 50 =
  35. 35.43 × 50 =
  36. 36.15 × 5 =
  37. 37.49 × 5 =
  38. 38.29 × 5 =
  39. 39.17 × 5 =
  40. 40.31 × 5 =

Answer key

  1. 290
  2. 4800
  3. 4350
  4. 105
  5. 345
  6. 900
  7. 90
  8. 1150
  9. 380
  10. 3500
  11. 300
  12. 445
  13. 3250
  14. 225
  15. 230
  16. 230
  17. 3000
  18. 1700
  19. 255
  20. 1500
  21. 195
  22. 455
  23. 70
  24. 170
  25. 4650
  26. 150
  27. 1150
  28. 205
  29. 160
  30. 275
  31. 950
  32. 4800
  33. 4550
  34. 750
  35. 2150
  36. 75
  37. 245
  38. 145
  39. 85
  40. 155

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