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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 679 · 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. 1.66 × 5 =
  2. 2.37 × 5 =
  3. 3.34 × 5 =
  4. 4.76 × 5 =
  5. 5.98 × 50 =
  6. 6.96 × 50 =
  7. 7.45 × 5 =
  8. 8.55 × 5 =
  9. 9.20 × 50 =
  10. 10.18 × 50 =
  11. 11.65 × 5 =
  12. 12.98 × 50 =
  13. 13.72 × 5 =
  14. 14.12 × 50 =
  15. 15.50 × 5 =
  16. 16.51 × 5 =
  17. 17.43 × 5 =
  18. 18.14 × 5 =
  19. 19.52 × 50 =
  20. 20.64 × 5 =
  21. 21.85 × 5 =
  22. 22.24 × 5 =
  23. 23.88 × 5 =
  24. 24.15 × 50 =
  25. 25.68 × 5 =
  26. 26.42 × 50 =
  27. 27.22 × 50 =
  28. 28.24 × 5 =
  29. 29.21 × 50 =
  30. 30.18 × 5 =
  31. 31.53 × 50 =
  32. 32.58 × 50 =
  33. 33.73 × 50 =
  34. 34.54 × 50 =
  35. 35.40 × 50 =
  36. 36.77 × 5 =
  37. 37.34 × 5 =
  38. 38.52 × 50 =
  39. 39.86 × 50 =
  40. 40.27 × 50 =

Answer key

  1. 330
  2. 185
  3. 170
  4. 380
  5. 4900
  6. 4800
  7. 225
  8. 275
  9. 1000
  10. 900
  11. 325
  12. 4900
  13. 360
  14. 600
  15. 250
  16. 255
  17. 215
  18. 70
  19. 2600
  20. 320
  21. 425
  22. 120
  23. 440
  24. 750
  25. 340
  26. 2100
  27. 1100
  28. 120
  29. 1050
  30. 90
  31. 2650
  32. 2900
  33. 3650
  34. 2700
  35. 2000
  36. 385
  37. 170
  38. 2600
  39. 4300
  40. 1350

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