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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 269 · 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. 1.33 × 50 =
  2. 2.56 × 5 =
  3. 3.71 × 5 =
  4. 4.71 × 50 =
  5. 5.23 × 5 =
  6. 6.30 × 50 =
  7. 7.14 × 50 =
  8. 8.51 × 50 =
  9. 9.84 × 5 =
  10. 10.45 × 50 =
  11. 11.85 × 5 =
  12. 12.73 × 5 =
  13. 13.63 × 50 =
  14. 14.53 × 5 =
  15. 15.66 × 50 =
  16. 16.82 × 5 =
  17. 17.47 × 5 =
  18. 18.17 × 5 =
  19. 19.41 × 5 =
  20. 20.69 × 50 =
  21. 21.53 × 50 =
  22. 22.22 × 5 =
  23. 23.66 × 50 =
  24. 24.57 × 5 =
  25. 25.67 × 50 =
  26. 26.92 × 50 =
  27. 27.31 × 5 =
  28. 28.31 × 5 =
  29. 29.46 × 50 =
  30. 30.22 × 50 =
  31. 31.37 × 50 =
  32. 32.15 × 5 =
  33. 33.65 × 50 =
  34. 34.28 × 50 =
  35. 35.26 × 5 =
  36. 36.51 × 5 =
  37. 37.46 × 50 =
  38. 38.29 × 5 =
  39. 39.29 × 50 =
  40. 40.52 × 5 =

Answer key

  1. 1650
  2. 280
  3. 355
  4. 3550
  5. 115
  6. 1500
  7. 700
  8. 2550
  9. 420
  10. 2250
  11. 425
  12. 365
  13. 3150
  14. 265
  15. 3300
  16. 410
  17. 235
  18. 85
  19. 205
  20. 3450
  21. 2650
  22. 110
  23. 3300
  24. 285
  25. 3350
  26. 4600
  27. 155
  28. 155
  29. 2300
  30. 1100
  31. 1850
  32. 75
  33. 3250
  34. 1400
  35. 130
  36. 255
  37. 2300
  38. 145
  39. 1450
  40. 260

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