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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 486 · 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. 1.48 × 5 =
  2. 2.45 × 50 =
  3. 3.57 × 5 =
  4. 4.76 × 5 =
  5. 5.71 × 50 =
  6. 6.40 × 50 =
  7. 7.70 × 50 =
  8. 8.51 × 50 =
  9. 9.58 × 50 =
  10. 10.62 × 5 =
  11. 11.60 × 5 =
  12. 12.88 × 50 =
  13. 13.33 × 5 =
  14. 14.54 × 50 =
  15. 15.44 × 50 =
  16. 16.76 × 5 =
  17. 17.60 × 5 =
  18. 18.87 × 50 =
  19. 19.48 × 5 =
  20. 20.25 × 50 =
  21. 21.33 × 5 =
  22. 22.94 × 50 =
  23. 23.93 × 5 =
  24. 24.71 × 5 =
  25. 25.97 × 5 =
  26. 26.20 × 5 =
  27. 27.50 × 50 =
  28. 28.78 × 5 =
  29. 29.66 × 50 =
  30. 30.69 × 5 =
  31. 31.58 × 50 =
  32. 32.83 × 50 =
  33. 33.21 × 5 =
  34. 34.12 × 50 =
  35. 35.51 × 50 =
  36. 36.30 × 50 =
  37. 37.56 × 5 =
  38. 38.26 × 50 =
  39. 39.23 × 50 =
  40. 40.83 × 50 =

Answer key

  1. 240
  2. 2250
  3. 285
  4. 380
  5. 3550
  6. 2000
  7. 3500
  8. 2550
  9. 2900
  10. 310
  11. 300
  12. 4400
  13. 165
  14. 2700
  15. 2200
  16. 380
  17. 300
  18. 4350
  19. 240
  20. 1250
  21. 165
  22. 4700
  23. 465
  24. 355
  25. 485
  26. 100
  27. 2500
  28. 390
  29. 3300
  30. 345
  31. 2900
  32. 4150
  33. 105
  34. 600
  35. 2550
  36. 1500
  37. 280
  38. 1300
  39. 1150
  40. 4150

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