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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 445 · 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. 1.86 × 5 =
  2. 2.29 × 5 =
  3. 3.88 × 50 =
  4. 4.90 × 50 =
  5. 5.51 × 5 =
  6. 6.45 × 50 =
  7. 7.53 × 5 =
  8. 8.42 × 50 =
  9. 9.29 × 5 =
  10. 10.36 × 50 =
  11. 11.91 × 50 =
  12. 12.78 × 50 =
  13. 13.67 × 50 =
  14. 14.35 × 50 =
  15. 15.43 × 5 =
  16. 16.44 × 5 =
  17. 17.19 × 50 =
  18. 18.46 × 5 =
  19. 19.19 × 50 =
  20. 20.88 × 5 =
  21. 21.80 × 5 =
  22. 22.88 × 5 =
  23. 23.20 × 5 =
  24. 24.60 × 50 =
  25. 25.98 × 50 =
  26. 26.47 × 5 =
  27. 27.83 × 50 =
  28. 28.58 × 5 =
  29. 29.42 × 5 =
  30. 30.42 × 50 =
  31. 31.27 × 5 =
  32. 32.76 × 50 =
  33. 33.18 × 50 =
  34. 34.44 × 5 =
  35. 35.81 × 5 =
  36. 36.52 × 5 =
  37. 37.97 × 50 =
  38. 38.59 × 5 =
  39. 39.67 × 50 =
  40. 40.63 × 5 =

Answer key

  1. 430
  2. 145
  3. 4400
  4. 4500
  5. 255
  6. 2250
  7. 265
  8. 2100
  9. 145
  10. 1800
  11. 4550
  12. 3900
  13. 3350
  14. 1750
  15. 215
  16. 220
  17. 950
  18. 230
  19. 950
  20. 440
  21. 400
  22. 440
  23. 100
  24. 3000
  25. 4900
  26. 235
  27. 4150
  28. 290
  29. 210
  30. 2100
  31. 135
  32. 3800
  33. 900
  34. 220
  35. 405
  36. 260
  37. 4850
  38. 295
  39. 3350
  40. 315

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