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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 284 · 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. 1.19 × 50 =
  2. 2.61 × 5 =
  3. 3.30 × 50 =
  4. 4.20 × 5 =
  5. 5.36 × 5 =
  6. 6.85 × 5 =
  7. 7.93 × 5 =
  8. 8.44 × 50 =
  9. 9.39 × 5 =
  10. 10.86 × 50 =
  11. 11.31 × 50 =
  12. 12.58 × 5 =
  13. 13.35 × 5 =
  14. 14.81 × 50 =
  15. 15.70 × 50 =
  16. 16.50 × 50 =
  17. 17.98 × 5 =
  18. 18.39 × 50 =
  19. 19.13 × 50 =
  20. 20.19 × 50 =
  21. 21.90 × 50 =
  22. 22.26 × 5 =
  23. 23.56 × 5 =
  24. 24.57 × 50 =
  25. 25.33 × 5 =
  26. 26.43 × 5 =
  27. 27.60 × 50 =
  28. 28.51 × 50 =
  29. 29.57 × 50 =
  30. 30.20 × 50 =
  31. 31.71 × 50 =
  32. 32.62 × 50 =
  33. 33.48 × 5 =
  34. 34.56 × 50 =
  35. 35.64 × 50 =
  36. 36.51 × 5 =
  37. 37.96 × 5 =
  38. 38.68 × 50 =
  39. 39.93 × 50 =
  40. 40.12 × 5 =

Answer key

  1. 950
  2. 305
  3. 1500
  4. 100
  5. 180
  6. 425
  7. 465
  8. 2200
  9. 195
  10. 4300
  11. 1550
  12. 290
  13. 175
  14. 4050
  15. 3500
  16. 2500
  17. 490
  18. 1950
  19. 650
  20. 950
  21. 4500
  22. 130
  23. 280
  24. 2850
  25. 165
  26. 215
  27. 3000
  28. 2550
  29. 2850
  30. 1000
  31. 3550
  32. 3100
  33. 240
  34. 2800
  35. 3200
  36. 255
  37. 480
  38. 3400
  39. 4650
  40. 60

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