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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 588 · 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. 1.85 × 5 =
  2. 2.27 × 50 =
  3. 3.31 × 5 =
  4. 4.15 × 5 =
  5. 5.63 × 5 =
  6. 6.67 × 5 =
  7. 7.38 × 5 =
  8. 8.26 × 5 =
  9. 9.26 × 5 =
  10. 10.64 × 5 =
  11. 11.56 × 5 =
  12. 12.44 × 5 =
  13. 13.52 × 5 =
  14. 14.67 × 5 =
  15. 15.58 × 5 =
  16. 16.16 × 50 =
  17. 17.14 × 50 =
  18. 18.27 × 50 =
  19. 19.36 × 5 =
  20. 20.19 × 50 =
  21. 21.63 × 50 =
  22. 22.90 × 5 =
  23. 23.31 × 5 =
  24. 24.67 × 50 =
  25. 25.91 × 5 =
  26. 26.43 × 5 =
  27. 27.75 × 50 =
  28. 28.34 × 50 =
  29. 29.22 × 50 =
  30. 30.95 × 50 =
  31. 31.34 × 50 =
  32. 32.30 × 5 =
  33. 33.35 × 5 =
  34. 34.54 × 50 =
  35. 35.52 × 50 =
  36. 36.93 × 5 =
  37. 37.64 × 5 =
  38. 38.84 × 50 =
  39. 39.50 × 5 =
  40. 40.51 × 5 =

Answer key

  1. 425
  2. 1350
  3. 155
  4. 75
  5. 315
  6. 335
  7. 190
  8. 130
  9. 130
  10. 320
  11. 280
  12. 220
  13. 260
  14. 335
  15. 290
  16. 800
  17. 700
  18. 1350
  19. 180
  20. 950
  21. 3150
  22. 450
  23. 155
  24. 3350
  25. 455
  26. 215
  27. 3750
  28. 1700
  29. 1100
  30. 4750
  31. 1700
  32. 150
  33. 175
  34. 2700
  35. 2600
  36. 465
  37. 320
  38. 4200
  39. 250
  40. 255

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