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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 770 · 40 questions
TalentJR

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

NameDateTime takenScore ___ / 40
  1. 1.94 × 50 =
  2. 2.₹88.55 + ₹7.80 =
  3. 3.₹24.50 + ₹21.95 =
  4. 4.9 + 4 + 7 + 6 =
  5. 5.₹12.30 − ₹4.75 =
  6. 6.57 + 62 + 68 + 20 =
  7. 7.69² =
  8. 8.76 × 50 =
  9. 9.112 + 67 =
  10. 10.970 ÷ 5 =
  11. 11.451 − 99 =
  12. 12.59² =
  13. 13.367 − 77 =
  14. 14.7 + 4 + 5 + 6 + 3 =
  15. 15.200 ÷ 25 =
  16. 16.Check with nines: 76 × 35 = 2660. Correct or wrong? (a) wrong (b) correct
  17. 17.21 × 50 =
  18. 18.301 + 77 =
  19. 19.53 × 15 =
  20. 20.66 − 58 =
  21. 21.69² =
  22. 22.31² =
  23. 23.330 − 29 =
  24. 24.14 × 18 =
  25. 25.135 + 29 =
  26. 26.12 × 5 =
  27. 27.Check with nines: 51 × 30 = 1530. Correct or wrong? (a) wrong (b) correct
  28. 28.41 × 5 =
  29. 29.7 + 9 + 2 + 3 =
  30. 30.157 × 4 =
  31. 31.6 × 15 =
  32. 32.181 − 98 =
  33. 33.13 + 52 + 30 + 76 =
  34. 34.₹12.60 + ₹22.05 =
  35. 35.21 × 15 =
  36. 36.64 + 79 + 13 + 14 =
  37. 37.511 − 69 =
  38. 38.114 × 4 =
  39. 39.4 + 2 + 5 + 8 =
  40. 40.349 + 57 =

Answer key

  1. 4700
  2. 96.35
  3. 46.45
  4. 26
  5. 7.55
  6. 207
  7. 4761
  8. 3800
  9. 179
  10. 194
  11. 352
  12. 3481
  13. 290
  14. 25
  15. 8
  16. correct
  17. 1050
  18. 378
  19. 795
  20. 8
  21. 4761
  22. 961
  23. 301
  24. 252
  25. 164
  26. 60
  27. correct
  28. 205
  29. 21
  30. 628
  31. 90
  32. 83
  33. 171
  34. 34.65
  35. 315
  36. 170
  37. 442
  38. 456
  39. 19
  40. 406

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