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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 698 · 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. 1.74 × 50 =
  2. 2.59 × 5 =
  3. 3.45 × 50 =
  4. 4.81 × 5 =
  5. 5.55 × 5 =
  6. 6.63 × 50 =
  7. 7.87 × 50 =
  8. 8.64 × 5 =
  9. 9.95 × 5 =
  10. 10.85 × 5 =
  11. 11.20 × 5 =
  12. 12.58 × 50 =
  13. 13.51 × 5 =
  14. 14.30 × 50 =
  15. 15.26 × 5 =
  16. 16.32 × 50 =
  17. 17.53 × 5 =
  18. 18.96 × 5 =
  19. 19.26 × 50 =
  20. 20.95 × 5 =
  21. 21.15 × 5 =
  22. 22.73 × 5 =
  23. 23.29 × 5 =
  24. 24.12 × 5 =
  25. 25.19 × 5 =
  26. 26.82 × 5 =
  27. 27.17 × 5 =
  28. 28.38 × 50 =
  29. 29.67 × 5 =
  30. 30.23 × 50 =
  31. 31.19 × 50 =
  32. 32.14 × 50 =
  33. 33.48 × 50 =
  34. 34.57 × 5 =
  35. 35.48 × 5 =
  36. 36.56 × 50 =
  37. 37.47 × 50 =
  38. 38.97 × 5 =
  39. 39.91 × 50 =
  40. 40.67 × 5 =

Answer key

  1. 3700
  2. 295
  3. 2250
  4. 405
  5. 275
  6. 3150
  7. 4350
  8. 320
  9. 475
  10. 425
  11. 100
  12. 2900
  13. 255
  14. 1500
  15. 130
  16. 1600
  17. 265
  18. 480
  19. 1300
  20. 475
  21. 75
  22. 365
  23. 145
  24. 60
  25. 95
  26. 410
  27. 85
  28. 1900
  29. 335
  30. 1150
  31. 950
  32. 700
  33. 2400
  34. 285
  35. 240
  36. 2800
  37. 2350
  38. 485
  39. 4550
  40. 335

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