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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 198 · 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 × 5 =
  2. 2.28 × 50 =
  3. 3.91 × 5 =
  4. 4.76 × 5 =
  5. 5.66 × 5 =
  6. 6.30 × 5 =
  7. 7.44 × 50 =
  8. 8.48 × 50 =
  9. 9.45 × 5 =
  10. 10.61 × 50 =
  11. 11.30 × 5 =
  12. 12.95 × 50 =
  13. 13.27 × 50 =
  14. 14.52 × 5 =
  15. 15.20 × 50 =
  16. 16.28 × 50 =
  17. 17.34 × 5 =
  18. 18.38 × 5 =
  19. 19.82 × 5 =
  20. 20.12 × 50 =
  21. 21.51 × 50 =
  22. 22.46 × 5 =
  23. 23.24 × 50 =
  24. 24.69 × 50 =
  25. 25.26 × 5 =
  26. 26.89 × 5 =
  27. 27.25 × 5 =
  28. 28.18 × 5 =
  29. 29.37 × 5 =
  30. 30.25 × 50 =
  31. 31.23 × 5 =
  32. 32.58 × 5 =
  33. 33.68 × 50 =
  34. 34.79 × 5 =
  35. 35.71 × 50 =
  36. 36.52 × 50 =
  37. 37.63 × 5 =
  38. 38.19 × 5 =
  39. 39.77 × 5 =
  40. 40.93 × 50 =

Answer key

  1. 370
  2. 1400
  3. 455
  4. 380
  5. 330
  6. 150
  7. 2200
  8. 2400
  9. 225
  10. 3050
  11. 150
  12. 4750
  13. 1350
  14. 260
  15. 1000
  16. 1400
  17. 170
  18. 190
  19. 410
  20. 600
  21. 2550
  22. 230
  23. 1200
  24. 3450
  25. 130
  26. 445
  27. 125
  28. 90
  29. 185
  30. 1250
  31. 115
  32. 290
  33. 3400
  34. 395
  35. 3550
  36. 2600
  37. 315
  38. 95
  39. 385
  40. 4650

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