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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 350 · 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. 1.95 × 5 =
  2. 2.48 × 5 =
  3. 3.54 × 5 =
  4. 4.67 × 50 =
  5. 5.78 × 5 =
  6. 6.83 × 50 =
  7. 7.55 × 50 =
  8. 8.15 × 50 =
  9. 9.73 × 5 =
  10. 10.98 × 5 =
  11. 11.49 × 5 =
  12. 12.32 × 50 =
  13. 13.15 × 50 =
  14. 14.34 × 50 =
  15. 15.58 × 50 =
  16. 16.65 × 5 =
  17. 17.23 × 5 =
  18. 18.79 × 50 =
  19. 19.26 × 50 =
  20. 20.93 × 5 =
  21. 21.41 × 50 =
  22. 22.75 × 5 =
  23. 23.16 × 5 =
  24. 24.15 × 50 =
  25. 25.53 × 5 =
  26. 26.14 × 50 =
  27. 27.15 × 5 =
  28. 28.13 × 5 =
  29. 29.14 × 50 =
  30. 30.50 × 50 =
  31. 31.30 × 50 =
  32. 32.82 × 5 =
  33. 33.26 × 5 =
  34. 34.68 × 50 =
  35. 35.90 × 50 =
  36. 36.60 × 5 =
  37. 37.51 × 5 =
  38. 38.79 × 50 =
  39. 39.26 × 50 =
  40. 40.95 × 5 =

Answer key

  1. 475
  2. 240
  3. 270
  4. 3350
  5. 390
  6. 4150
  7. 2750
  8. 750
  9. 365
  10. 490
  11. 245
  12. 1600
  13. 750
  14. 1700
  15. 2900
  16. 325
  17. 115
  18. 3950
  19. 1300
  20. 465
  21. 2050
  22. 375
  23. 80
  24. 750
  25. 265
  26. 700
  27. 75
  28. 65
  29. 700
  30. 2500
  31. 1500
  32. 410
  33. 130
  34. 3400
  35. 4500
  36. 300
  37. 255
  38. 3950
  39. 1300
  40. 475

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