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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 390 · 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. 1.65 × 5 =
  2. 2.74 × 50 =
  3. 3.48 × 5 =
  4. 4.40 × 5 =
  5. 5.60 × 50 =
  6. 6.95 × 5 =
  7. 7.26 × 5 =
  8. 8.93 × 50 =
  9. 9.93 × 5 =
  10. 10.79 × 5 =
  11. 11.33 × 5 =
  12. 12.54 × 5 =
  13. 13.66 × 50 =
  14. 14.51 × 50 =
  15. 15.77 × 5 =
  16. 16.46 × 5 =
  17. 17.61 × 50 =
  18. 18.96 × 50 =
  19. 19.53 × 50 =
  20. 20.50 × 5 =
  21. 21.35 × 50 =
  22. 22.26 × 5 =
  23. 23.21 × 50 =
  24. 24.21 × 50 =
  25. 25.89 × 5 =
  26. 26.40 × 5 =
  27. 27.34 × 5 =
  28. 28.56 × 5 =
  29. 29.13 × 50 =
  30. 30.17 × 50 =
  31. 31.58 × 5 =
  32. 32.33 × 5 =
  33. 33.15 × 5 =
  34. 34.71 × 5 =
  35. 35.19 × 5 =
  36. 36.61 × 5 =
  37. 37.87 × 50 =
  38. 38.82 × 5 =
  39. 39.19 × 5 =
  40. 40.64 × 50 =

Answer key

  1. 325
  2. 3700
  3. 240
  4. 200
  5. 3000
  6. 475
  7. 130
  8. 4650
  9. 465
  10. 395
  11. 165
  12. 270
  13. 3300
  14. 2550
  15. 385
  16. 230
  17. 3050
  18. 4800
  19. 2650
  20. 250
  21. 1750
  22. 130
  23. 1050
  24. 1050
  25. 445
  26. 200
  27. 170
  28. 280
  29. 650
  30. 850
  31. 290
  32. 165
  33. 75
  34. 355
  35. 95
  36. 305
  37. 4350
  38. 410
  39. 95
  40. 3200

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