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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 678 · 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. 1.59 × 50 =
  2. 2.44 × 5 =
  3. 3.45 × 5 =
  4. 4.87 × 50 =
  5. 5.92 × 5 =
  6. 6.80 × 50 =
  7. 7.66 × 5 =
  8. 8.93 × 5 =
  9. 9.79 × 5 =
  10. 10.45 × 50 =
  11. 11.22 × 5 =
  12. 12.32 × 5 =
  13. 13.27 × 5 =
  14. 14.63 × 5 =
  15. 15.28 × 50 =
  16. 16.20 × 5 =
  17. 17.95 × 5 =
  18. 18.46 × 5 =
  19. 19.18 × 50 =
  20. 20.63 × 5 =
  21. 21.12 × 50 =
  22. 22.86 × 5 =
  23. 23.73 × 50 =
  24. 24.91 × 5 =
  25. 25.86 × 5 =
  26. 26.19 × 50 =
  27. 27.76 × 5 =
  28. 28.29 × 5 =
  29. 29.63 × 50 =
  30. 30.27 × 5 =
  31. 31.34 × 5 =
  32. 32.52 × 50 =
  33. 33.89 × 5 =
  34. 34.41 × 50 =
  35. 35.70 × 50 =
  36. 36.63 × 50 =
  37. 37.40 × 5 =
  38. 38.93 × 5 =
  39. 39.86 × 50 =
  40. 40.45 × 50 =

Answer key

  1. 2950
  2. 220
  3. 225
  4. 4350
  5. 460
  6. 4000
  7. 330
  8. 465
  9. 395
  10. 2250
  11. 110
  12. 160
  13. 135
  14. 315
  15. 1400
  16. 100
  17. 475
  18. 230
  19. 900
  20. 315
  21. 600
  22. 430
  23. 3650
  24. 455
  25. 430
  26. 950
  27. 380
  28. 145
  29. 3150
  30. 135
  31. 170
  32. 2600
  33. 445
  34. 2050
  35. 3500
  36. 3150
  37. 200
  38. 465
  39. 4300
  40. 2250

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