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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 18 · 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. 1.53 × 50 =
  2. 2.57 × 50 =
  3. 3.24 × 5 =
  4. 4.36 × 5 =
  5. 5.85 × 50 =
  6. 6.73 × 50 =
  7. 7.35 × 5 =
  8. 8.68 × 50 =
  9. 9.42 × 5 =
  10. 10.14 × 50 =
  11. 11.30 × 50 =
  12. 12.91 × 50 =
  13. 13.26 × 50 =
  14. 14.73 × 5 =
  15. 15.56 × 5 =
  16. 16.77 × 5 =
  17. 17.35 × 50 =
  18. 18.93 × 5 =
  19. 19.98 × 5 =
  20. 20.70 × 50 =
  21. 21.96 × 50 =
  22. 22.65 × 50 =
  23. 23.72 × 50 =
  24. 24.25 × 50 =
  25. 25.23 × 5 =
  26. 26.75 × 5 =
  27. 27.42 × 50 =
  28. 28.53 × 5 =
  29. 29.95 × 5 =
  30. 30.96 × 5 =
  31. 31.58 × 5 =
  32. 32.45 × 50 =
  33. 33.17 × 5 =
  34. 34.33 × 50 =
  35. 35.64 × 50 =
  36. 36.65 × 5 =
  37. 37.88 × 50 =
  38. 38.69 × 5 =
  39. 39.55 × 50 =
  40. 40.64 × 5 =

Answer key

  1. 2650
  2. 2850
  3. 120
  4. 180
  5. 4250
  6. 3650
  7. 175
  8. 3400
  9. 210
  10. 700
  11. 1500
  12. 4550
  13. 1300
  14. 365
  15. 280
  16. 385
  17. 1750
  18. 465
  19. 490
  20. 3500
  21. 4800
  22. 3250
  23. 3600
  24. 1250
  25. 115
  26. 375
  27. 2100
  28. 265
  29. 475
  30. 480
  31. 290
  32. 2250
  33. 85
  34. 1650
  35. 3200
  36. 325
  37. 4400
  38. 345
  39. 2750
  40. 320

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