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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 672 · 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. 1.44 × 50 =
  2. 2.63 × 5 =
  3. 3.76 × 50 =
  4. 4.36 × 5 =
  5. 5.36 × 5 =
  6. 6.68 × 50 =
  7. 7.97 × 5 =
  8. 8.58 × 5 =
  9. 9.95 × 5 =
  10. 10.54 × 50 =
  11. 11.37 × 5 =
  12. 12.17 × 50 =
  13. 13.75 × 5 =
  14. 14.46 × 5 =
  15. 15.20 × 5 =
  16. 16.21 × 5 =
  17. 17.89 × 5 =
  18. 18.59 × 5 =
  19. 19.58 × 50 =
  20. 20.32 × 50 =
  21. 21.50 × 50 =
  22. 22.33 × 50 =
  23. 23.34 × 50 =
  24. 24.28 × 5 =
  25. 25.36 × 50 =
  26. 26.45 × 50 =
  27. 27.15 × 50 =
  28. 28.80 × 50 =
  29. 29.93 × 5 =
  30. 30.90 × 5 =
  31. 31.91 × 5 =
  32. 32.93 × 50 =
  33. 33.46 × 5 =
  34. 34.90 × 5 =
  35. 35.28 × 5 =
  36. 36.65 × 50 =
  37. 37.67 × 50 =
  38. 38.61 × 50 =
  39. 39.23 × 5 =
  40. 40.85 × 50 =

Answer key

  1. 2200
  2. 315
  3. 3800
  4. 180
  5. 180
  6. 3400
  7. 485
  8. 290
  9. 475
  10. 2700
  11. 185
  12. 850
  13. 375
  14. 230
  15. 100
  16. 105
  17. 445
  18. 295
  19. 2900
  20. 1600
  21. 2500
  22. 1650
  23. 1700
  24. 140
  25. 1800
  26. 2250
  27. 750
  28. 4000
  29. 465
  30. 450
  31. 455
  32. 4650
  33. 230
  34. 450
  35. 140
  36. 3250
  37. 3350
  38. 3050
  39. 115
  40. 4250

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