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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 6 · 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. 1.22 × 5 =
  2. 2.44 × 50 =
  3. 3.39 × 5 =
  4. 4.96 × 5 =
  5. 5.67 × 5 =
  6. 6.15 × 5 =
  7. 7.86 × 50 =
  8. 8.19 × 5 =
  9. 9.31 × 5 =
  10. 10.65 × 50 =
  11. 11.62 × 50 =
  12. 12.62 × 50 =
  13. 13.62 × 5 =
  14. 14.37 × 5 =
  15. 15.41 × 5 =
  16. 16.50 × 50 =
  17. 17.42 × 50 =
  18. 18.88 × 50 =
  19. 19.22 × 50 =
  20. 20.65 × 50 =
  21. 21.59 × 50 =
  22. 22.34 × 5 =
  23. 23.14 × 50 =
  24. 24.69 × 50 =
  25. 25.53 × 5 =
  26. 26.19 × 5 =
  27. 27.14 × 50 =
  28. 28.60 × 5 =
  29. 29.68 × 5 =
  30. 30.15 × 50 =
  31. 31.88 × 50 =
  32. 32.77 × 5 =
  33. 33.56 × 5 =
  34. 34.45 × 5 =
  35. 35.86 × 50 =
  36. 36.59 × 5 =
  37. 37.76 × 5 =
  38. 38.46 × 5 =
  39. 39.81 × 5 =
  40. 40.20 × 5 =

Answer key

  1. 110
  2. 2200
  3. 195
  4. 480
  5. 335
  6. 75
  7. 4300
  8. 95
  9. 155
  10. 3250
  11. 3100
  12. 3100
  13. 310
  14. 185
  15. 205
  16. 2500
  17. 2100
  18. 4400
  19. 1100
  20. 3250
  21. 2950
  22. 170
  23. 700
  24. 3450
  25. 265
  26. 95
  27. 700
  28. 300
  29. 340
  30. 750
  31. 4400
  32. 385
  33. 280
  34. 225
  35. 4300
  36. 295
  37. 380
  38. 230
  39. 405
  40. 100

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