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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 663 · 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. 1.66 × 50 =
  2. 2.24 × 50 =
  3. 3.30 × 50 =
  4. 4.15 × 50 =
  5. 5.32 × 50 =
  6. 6.76 × 5 =
  7. 7.37 × 5 =
  8. 8.31 × 50 =
  9. 9.28 × 50 =
  10. 10.56 × 50 =
  11. 11.83 × 50 =
  12. 12.97 × 50 =
  13. 13.29 × 5 =
  14. 14.20 × 5 =
  15. 15.63 × 5 =
  16. 16.48 × 5 =
  17. 17.47 × 5 =
  18. 18.80 × 5 =
  19. 19.33 × 5 =
  20. 20.62 × 5 =
  21. 21.89 × 50 =
  22. 22.26 × 5 =
  23. 23.13 × 5 =
  24. 24.44 × 5 =
  25. 25.75 × 5 =
  26. 26.48 × 5 =
  27. 27.33 × 5 =
  28. 28.26 × 5 =
  29. 29.64 × 5 =
  30. 30.63 × 50 =
  31. 31.35 × 5 =
  32. 32.51 × 50 =
  33. 33.98 × 5 =
  34. 34.63 × 5 =
  35. 35.25 × 5 =
  36. 36.40 × 50 =
  37. 37.85 × 50 =
  38. 38.87 × 50 =
  39. 39.57 × 5 =
  40. 40.42 × 50 =

Answer key

  1. 3300
  2. 1200
  3. 1500
  4. 750
  5. 1600
  6. 380
  7. 185
  8. 1550
  9. 1400
  10. 2800
  11. 4150
  12. 4850
  13. 145
  14. 100
  15. 315
  16. 240
  17. 235
  18. 400
  19. 165
  20. 310
  21. 4450
  22. 130
  23. 65
  24. 220
  25. 375
  26. 240
  27. 165
  28. 130
  29. 320
  30. 3150
  31. 175
  32. 2550
  33. 490
  34. 315
  35. 125
  36. 2000
  37. 4250
  38. 4350
  39. 285
  40. 2100

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