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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 346 · 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. 1.23 × 5 =
  2. 2.98 × 50 =
  3. 3.18 × 5 =
  4. 4.17 × 5 =
  5. 5.28 × 50 =
  6. 6.45 × 50 =
  7. 7.20 × 5 =
  8. 8.45 × 5 =
  9. 9.16 × 5 =
  10. 10.40 × 5 =
  11. 11.50 × 50 =
  12. 12.22 × 50 =
  13. 13.39 × 5 =
  14. 14.14 × 5 =
  15. 15.41 × 5 =
  16. 16.71 × 5 =
  17. 17.52 × 5 =
  18. 18.54 × 50 =
  19. 19.70 × 5 =
  20. 20.35 × 50 =
  21. 21.44 × 50 =
  22. 22.82 × 5 =
  23. 23.65 × 50 =
  24. 24.69 × 50 =
  25. 25.57 × 50 =
  26. 26.52 × 5 =
  27. 27.92 × 5 =
  28. 28.62 × 5 =
  29. 29.68 × 50 =
  30. 30.44 × 5 =
  31. 31.32 × 50 =
  32. 32.32 × 5 =
  33. 33.44 × 5 =
  34. 34.71 × 5 =
  35. 35.24 × 5 =
  36. 36.74 × 50 =
  37. 37.89 × 5 =
  38. 38.73 × 50 =
  39. 39.58 × 50 =
  40. 40.48 × 50 =

Answer key

  1. 115
  2. 4900
  3. 90
  4. 85
  5. 1400
  6. 2250
  7. 100
  8. 225
  9. 80
  10. 200
  11. 2500
  12. 1100
  13. 195
  14. 70
  15. 205
  16. 355
  17. 260
  18. 2700
  19. 350
  20. 1750
  21. 2200
  22. 410
  23. 3250
  24. 3450
  25. 2850
  26. 260
  27. 460
  28. 310
  29. 3400
  30. 220
  31. 1600
  32. 160
  33. 220
  34. 355
  35. 120
  36. 3700
  37. 445
  38. 3650
  39. 2900
  40. 2400

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