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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 534 · 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. 1.44 × 5 =
  2. 2.91 × 5 =
  3. 3.57 × 5 =
  4. 4.80 × 50 =
  5. 5.66 × 50 =
  6. 6.43 × 5 =
  7. 7.26 × 5 =
  8. 8.55 × 5 =
  9. 9.62 × 50 =
  10. 10.89 × 5 =
  11. 11.96 × 5 =
  12. 12.76 × 5 =
  13. 13.32 × 50 =
  14. 14.35 × 50 =
  15. 15.51 × 5 =
  16. 16.71 × 50 =
  17. 17.85 × 50 =
  18. 18.36 × 5 =
  19. 19.54 × 50 =
  20. 20.19 × 50 =
  21. 21.27 × 50 =
  22. 22.56 × 5 =
  23. 23.28 × 5 =
  24. 24.64 × 5 =
  25. 25.47 × 5 =
  26. 26.62 × 50 =
  27. 27.41 × 50 =
  28. 28.57 × 5 =
  29. 29.78 × 50 =
  30. 30.41 × 50 =
  31. 31.77 × 50 =
  32. 32.28 × 50 =
  33. 33.77 × 5 =
  34. 34.85 × 5 =
  35. 35.95 × 5 =
  36. 36.56 × 50 =
  37. 37.59 × 50 =
  38. 38.47 × 50 =
  39. 39.67 × 5 =
  40. 40.16 × 50 =

Answer key

  1. 220
  2. 455
  3. 285
  4. 4000
  5. 3300
  6. 215
  7. 130
  8. 275
  9. 3100
  10. 445
  11. 480
  12. 380
  13. 1600
  14. 1750
  15. 255
  16. 3550
  17. 4250
  18. 180
  19. 2700
  20. 950
  21. 1350
  22. 280
  23. 140
  24. 320
  25. 235
  26. 3100
  27. 2050
  28. 285
  29. 3900
  30. 2050
  31. 3850
  32. 1400
  33. 385
  34. 425
  35. 475
  36. 2800
  37. 2950
  38. 2350
  39. 335
  40. 800

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