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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 372 · 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. 1.34 × 50 =
  2. 2.13 × 5 =
  3. 3.58 × 5 =
  4. 4.52 × 5 =
  5. 5.78 × 50 =
  6. 6.34 × 50 =
  7. 7.96 × 5 =
  8. 8.46 × 50 =
  9. 9.26 × 5 =
  10. 10.66 × 5 =
  11. 11.96 × 5 =
  12. 12.24 × 5 =
  13. 13.13 × 50 =
  14. 14.44 × 5 =
  15. 15.63 × 5 =
  16. 16.70 × 50 =
  17. 17.14 × 50 =
  18. 18.55 × 50 =
  19. 19.58 × 50 =
  20. 20.96 × 5 =
  21. 21.23 × 50 =
  22. 22.87 × 50 =
  23. 23.91 × 5 =
  24. 24.95 × 5 =
  25. 25.98 × 5 =
  26. 26.79 × 5 =
  27. 27.33 × 5 =
  28. 28.78 × 50 =
  29. 29.30 × 5 =
  30. 30.91 × 50 =
  31. 31.85 × 50 =
  32. 32.48 × 5 =
  33. 33.63 × 5 =
  34. 34.19 × 50 =
  35. 35.27 × 5 =
  36. 36.27 × 5 =
  37. 37.55 × 50 =
  38. 38.60 × 50 =
  39. 39.61 × 5 =
  40. 40.29 × 5 =

Answer key

  1. 1700
  2. 65
  3. 290
  4. 260
  5. 3900
  6. 1700
  7. 480
  8. 2300
  9. 130
  10. 330
  11. 480
  12. 120
  13. 650
  14. 220
  15. 315
  16. 3500
  17. 700
  18. 2750
  19. 2900
  20. 480
  21. 1150
  22. 4350
  23. 455
  24. 475
  25. 490
  26. 395
  27. 165
  28. 3900
  29. 150
  30. 4550
  31. 4250
  32. 240
  33. 315
  34. 950
  35. 135
  36. 135
  37. 2750
  38. 3000
  39. 305
  40. 145

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