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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 195 · 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. 1.30 × 5 =
  2. 2.41 × 5 =
  3. 3.65 × 50 =
  4. 4.48 × 5 =
  5. 5.69 × 5 =
  6. 6.60 × 50 =
  7. 7.40 × 50 =
  8. 8.91 × 5 =
  9. 9.28 × 50 =
  10. 10.39 × 5 =
  11. 11.28 × 5 =
  12. 12.31 × 50 =
  13. 13.50 × 50 =
  14. 14.38 × 5 =
  15. 15.89 × 50 =
  16. 16.21 × 50 =
  17. 17.35 × 5 =
  18. 18.15 × 50 =
  19. 19.52 × 5 =
  20. 20.38 × 50 =
  21. 21.25 × 5 =
  22. 22.96 × 50 =
  23. 23.17 × 5 =
  24. 24.93 × 5 =
  25. 25.81 × 5 =
  26. 26.48 × 50 =
  27. 27.12 × 5 =
  28. 28.60 × 50 =
  29. 29.94 × 5 =
  30. 30.61 × 50 =
  31. 31.74 × 50 =
  32. 32.44 × 50 =
  33. 33.14 × 50 =
  34. 34.30 × 5 =
  35. 35.98 × 5 =
  36. 36.93 × 50 =
  37. 37.98 × 50 =
  38. 38.13 × 50 =
  39. 39.75 × 5 =
  40. 40.23 × 5 =

Answer key

  1. 150
  2. 205
  3. 3250
  4. 240
  5. 345
  6. 3000
  7. 2000
  8. 455
  9. 1400
  10. 195
  11. 140
  12. 1550
  13. 2500
  14. 190
  15. 4450
  16. 1050
  17. 175
  18. 750
  19. 260
  20. 1900
  21. 125
  22. 4800
  23. 85
  24. 465
  25. 405
  26. 2400
  27. 60
  28. 3000
  29. 470
  30. 3050
  31. 3700
  32. 2200
  33. 700
  34. 150
  35. 490
  36. 4650
  37. 4900
  38. 650
  39. 375
  40. 115

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