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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 669 · 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. 1.96 × 5 =
  2. 2.84 × 50 =
  3. 3.61 × 5 =
  4. 4.69 × 5 =
  5. 5.60 × 5 =
  6. 6.86 × 5 =
  7. 7.91 × 50 =
  8. 8.62 × 50 =
  9. 9.53 × 5 =
  10. 10.59 × 50 =
  11. 11.62 × 50 =
  12. 12.24 × 5 =
  13. 13.77 × 5 =
  14. 14.93 × 5 =
  15. 15.58 × 50 =
  16. 16.29 × 5 =
  17. 17.56 × 50 =
  18. 18.56 × 50 =
  19. 19.69 × 5 =
  20. 20.59 × 5 =
  21. 21.95 × 5 =
  22. 22.89 × 50 =
  23. 23.51 × 5 =
  24. 24.85 × 50 =
  25. 25.62 × 5 =
  26. 26.52 × 5 =
  27. 27.12 × 5 =
  28. 28.33 × 50 =
  29. 29.87 × 50 =
  30. 30.59 × 50 =
  31. 31.93 × 5 =
  32. 32.34 × 5 =
  33. 33.96 × 50 =
  34. 34.72 × 5 =
  35. 35.66 × 50 =
  36. 36.12 × 50 =
  37. 37.58 × 5 =
  38. 38.23 × 5 =
  39. 39.19 × 5 =
  40. 40.91 × 5 =

Answer key

  1. 480
  2. 4200
  3. 305
  4. 345
  5. 300
  6. 430
  7. 4550
  8. 3100
  9. 265
  10. 2950
  11. 3100
  12. 120
  13. 385
  14. 465
  15. 2900
  16. 145
  17. 2800
  18. 2800
  19. 345
  20. 295
  21. 475
  22. 4450
  23. 255
  24. 4250
  25. 310
  26. 260
  27. 60
  28. 1650
  29. 4350
  30. 2950
  31. 465
  32. 170
  33. 4800
  34. 360
  35. 3300
  36. 600
  37. 290
  38. 115
  39. 95
  40. 455

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