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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 355 · 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. 1.31 × 50 =
  2. 2.89 × 5 =
  3. 3.31 × 50 =
  4. 4.44 × 5 =
  5. 5.68 × 5 =
  6. 6.15 × 50 =
  7. 7.27 × 50 =
  8. 8.65 × 5 =
  9. 9.28 × 50 =
  10. 10.91 × 5 =
  11. 11.62 × 50 =
  12. 12.55 × 50 =
  13. 13.47 × 50 =
  14. 14.84 × 50 =
  15. 15.92 × 5 =
  16. 16.94 × 5 =
  17. 17.73 × 50 =
  18. 18.32 × 5 =
  19. 19.24 × 50 =
  20. 20.42 × 5 =
  21. 21.34 × 5 =
  22. 22.13 × 5 =
  23. 23.63 × 50 =
  24. 24.31 × 5 =
  25. 25.68 × 5 =
  26. 26.88 × 50 =
  27. 27.56 × 5 =
  28. 28.56 × 50 =
  29. 29.41 × 5 =
  30. 30.57 × 50 =
  31. 31.32 × 5 =
  32. 32.66 × 5 =
  33. 33.72 × 5 =
  34. 34.95 × 5 =
  35. 35.12 × 5 =
  36. 36.60 × 5 =
  37. 37.73 × 50 =
  38. 38.85 × 50 =
  39. 39.12 × 50 =
  40. 40.88 × 5 =

Answer key

  1. 1550
  2. 445
  3. 1550
  4. 220
  5. 340
  6. 750
  7. 1350
  8. 325
  9. 1400
  10. 455
  11. 3100
  12. 2750
  13. 2350
  14. 4200
  15. 460
  16. 470
  17. 3650
  18. 160
  19. 1200
  20. 210
  21. 170
  22. 65
  23. 3150
  24. 155
  25. 340
  26. 4400
  27. 280
  28. 2800
  29. 205
  30. 2850
  31. 160
  32. 330
  33. 360
  34. 475
  35. 60
  36. 300
  37. 3650
  38. 4250
  39. 600
  40. 440

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