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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 5 · 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. 1.22 × 5 =
  2. 2.87 × 50 =
  3. 3.57 × 50 =
  4. 4.92 × 5 =
  5. 5.31 × 5 =
  6. 6.64 × 50 =
  7. 7.31 × 50 =
  8. 8.65 × 50 =
  9. 9.66 × 50 =
  10. 10.84 × 50 =
  11. 11.43 × 5 =
  12. 12.58 × 50 =
  13. 13.89 × 5 =
  14. 14.41 × 50 =
  15. 15.67 × 5 =
  16. 16.21 × 50 =
  17. 17.26 × 5 =
  18. 18.81 × 5 =
  19. 19.37 × 5 =
  20. 20.90 × 50 =
  21. 21.33 × 50 =
  22. 22.16 × 5 =
  23. 23.68 × 5 =
  24. 24.68 × 50 =
  25. 25.54 × 5 =
  26. 26.98 × 50 =
  27. 27.62 × 5 =
  28. 28.62 × 5 =
  29. 29.44 × 5 =
  30. 30.28 × 5 =
  31. 31.18 × 50 =
  32. 32.30 × 50 =
  33. 33.82 × 5 =
  34. 34.95 × 5 =
  35. 35.83 × 50 =
  36. 36.84 × 50 =
  37. 37.96 × 5 =
  38. 38.48 × 5 =
  39. 39.86 × 50 =
  40. 40.31 × 50 =

Answer key

  1. 110
  2. 4350
  3. 2850
  4. 460
  5. 155
  6. 3200
  7. 1550
  8. 3250
  9. 3300
  10. 4200
  11. 215
  12. 2900
  13. 445
  14. 2050
  15. 335
  16. 1050
  17. 130
  18. 405
  19. 185
  20. 4500
  21. 1650
  22. 80
  23. 340
  24. 3400
  25. 270
  26. 4900
  27. 310
  28. 310
  29. 220
  30. 140
  31. 900
  32. 1500
  33. 410
  34. 475
  35. 4150
  36. 4200
  37. 480
  38. 240
  39. 4300
  40. 1550

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