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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 361 · 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. 1.60 × 5 =
  2. 2.25 × 50 =
  3. 3.59 × 5 =
  4. 4.16 × 5 =
  5. 5.67 × 50 =
  6. 6.26 × 5 =
  7. 7.58 × 5 =
  8. 8.19 × 50 =
  9. 9.77 × 50 =
  10. 10.81 × 5 =
  11. 11.25 × 50 =
  12. 12.55 × 5 =
  13. 13.25 × 5 =
  14. 14.60 × 50 =
  15. 15.55 × 5 =
  16. 16.27 × 5 =
  17. 17.90 × 5 =
  18. 18.28 × 50 =
  19. 19.90 × 5 =
  20. 20.63 × 5 =
  21. 21.83 × 50 =
  22. 22.27 × 5 =
  23. 23.24 × 5 =
  24. 24.62 × 5 =
  25. 25.18 × 50 =
  26. 26.27 × 50 =
  27. 27.13 × 5 =
  28. 28.68 × 50 =
  29. 29.68 × 50 =
  30. 30.62 × 5 =
  31. 31.90 × 50 =
  32. 32.76 × 50 =
  33. 33.71 × 5 =
  34. 34.53 × 5 =
  35. 35.29 × 5 =
  36. 36.91 × 5 =
  37. 37.97 × 5 =
  38. 38.68 × 5 =
  39. 39.34 × 5 =
  40. 40.78 × 5 =

Answer key

  1. 300
  2. 1250
  3. 295
  4. 80
  5. 3350
  6. 130
  7. 290
  8. 950
  9. 3850
  10. 405
  11. 1250
  12. 275
  13. 125
  14. 3000
  15. 275
  16. 135
  17. 450
  18. 1400
  19. 450
  20. 315
  21. 4150
  22. 135
  23. 120
  24. 310
  25. 900
  26. 1350
  27. 65
  28. 3400
  29. 3400
  30. 310
  31. 4500
  32. 3800
  33. 355
  34. 265
  35. 145
  36. 455
  37. 485
  38. 340
  39. 170
  40. 390

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