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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 331 · 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. 1.62 × 5 =
  2. 2.76 × 5 =
  3. 3.96 × 5 =
  4. 4.54 × 50 =
  5. 5.78 × 50 =
  6. 6.12 × 5 =
  7. 7.76 × 50 =
  8. 8.49 × 50 =
  9. 9.63 × 5 =
  10. 10.18 × 5 =
  11. 11.47 × 5 =
  12. 12.40 × 5 =
  13. 13.48 × 5 =
  14. 14.42 × 50 =
  15. 15.45 × 50 =
  16. 16.21 × 50 =
  17. 17.18 × 5 =
  18. 18.71 × 5 =
  19. 19.63 × 50 =
  20. 20.46 × 50 =
  21. 21.42 × 5 =
  22. 22.49 × 50 =
  23. 23.93 × 50 =
  24. 24.91 × 50 =
  25. 25.21 × 50 =
  26. 26.52 × 5 =
  27. 27.46 × 50 =
  28. 28.43 × 50 =
  29. 29.15 × 5 =
  30. 30.86 × 5 =
  31. 31.77 × 5 =
  32. 32.76 × 5 =
  33. 33.58 × 5 =
  34. 34.23 × 50 =
  35. 35.37 × 5 =
  36. 36.14 × 5 =
  37. 37.65 × 50 =
  38. 38.73 × 5 =
  39. 39.29 × 50 =
  40. 40.80 × 5 =

Answer key

  1. 310
  2. 380
  3. 480
  4. 2700
  5. 3900
  6. 60
  7. 3800
  8. 2450
  9. 315
  10. 90
  11. 235
  12. 200
  13. 240
  14. 2100
  15. 2250
  16. 1050
  17. 90
  18. 355
  19. 3150
  20. 2300
  21. 210
  22. 2450
  23. 4650
  24. 4550
  25. 1050
  26. 260
  27. 2300
  28. 2150
  29. 75
  30. 430
  31. 385
  32. 380
  33. 290
  34. 1150
  35. 185
  36. 70
  37. 3250
  38. 365
  39. 1450
  40. 400

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