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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 76 · 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. 1.56 × 5 =
  2. 2.79 × 5 =
  3. 3.44 × 5 =
  4. 4.62 × 5 =
  5. 5.63 × 50 =
  6. 6.37 × 5 =
  7. 7.56 × 5 =
  8. 8.81 × 50 =
  9. 9.48 × 5 =
  10. 10.98 × 50 =
  11. 11.72 × 5 =
  12. 12.76 × 5 =
  13. 13.95 × 5 =
  14. 14.53 × 5 =
  15. 15.84 × 5 =
  16. 16.32 × 50 =
  17. 17.82 × 50 =
  18. 18.93 × 5 =
  19. 19.98 × 5 =
  20. 20.31 × 50 =
  21. 21.87 × 50 =
  22. 22.58 × 5 =
  23. 23.97 × 5 =
  24. 24.79 × 5 =
  25. 25.40 × 50 =
  26. 26.45 × 50 =
  27. 27.92 × 5 =
  28. 28.68 × 5 =
  29. 29.71 × 50 =
  30. 30.27 × 5 =
  31. 31.68 × 50 =
  32. 32.33 × 50 =
  33. 33.23 × 5 =
  34. 34.40 × 5 =
  35. 35.51 × 5 =
  36. 36.91 × 5 =
  37. 37.18 × 50 =
  38. 38.15 × 50 =
  39. 39.66 × 50 =
  40. 40.65 × 5 =

Answer key

  1. 280
  2. 395
  3. 220
  4. 310
  5. 3150
  6. 185
  7. 280
  8. 4050
  9. 240
  10. 4900
  11. 360
  12. 380
  13. 475
  14. 265
  15. 420
  16. 1600
  17. 4100
  18. 465
  19. 490
  20. 1550
  21. 4350
  22. 290
  23. 485
  24. 395
  25. 2000
  26. 2250
  27. 460
  28. 340
  29. 3550
  30. 135
  31. 3400
  32. 1650
  33. 115
  34. 200
  35. 255
  36. 455
  37. 900
  38. 750
  39. 3300
  40. 325

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