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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 898 · 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. 1.49² =
  2. 2.₹47.80 − ₹6.70 =
  3. 3.58 × 15 =
  4. 4.Check with nines: 193 + 149 = 339. Correct or wrong? (a) correct (b) wrong
  5. 5.2 + 1 + 9 + 3 =
  6. 6.10 × 15 =
  7. 7.Check with nines: 77 × 37 = 2849. Correct or wrong? (a) correct (b) wrong
  8. 8.26 + 57 + 52 + 61 =
  9. 9.1050 ÷ 25 =
  10. 10.₹8.75 + ₹14.75 =
  11. 11.940 ÷ 5 =
  12. 12.19² =
  13. 13.Best estimate of 397 × 6? (a) 4800 (b) 24000 (c) 240 (d) 2400
  14. 14.5% of 480 =
  15. 15.39² =
  16. 16.31² =
  17. 17.4 + 2 + 7 + 7 + 8 =
  18. 18.320 ÷ 5 =
  19. 19.405 ÷ 5 =
  20. 20.1250 ÷ 50 =
  21. 21.170 ÷ 5 =
  22. 22.20 × 15 =
  23. 23.475 ÷ 5 =
  24. 24.675 ÷ 25 =
  25. 25.17 × 13 =
  26. 26.Check with nines: 19 × 86 = 1640. Correct or wrong? (a) correct (b) wrong
  27. 27.73 + 25 + 70 + 21 =
  28. 28.202 + 58 =
  29. 29.222 + 49 =
  30. 30.287 − 96 =
  31. 31.28 × 15 =
  32. 32.85 + 18 =
  33. 33.₹41.65 − ₹24.40 =
  34. 34.25 × 50 =
  35. 35.Check with nines: 74 × 93 = 6882. Correct or wrong? (a) correct (b) wrong
  36. 36.370 ÷ 5 =
  37. 37.4 × 15 =
  38. 38.62 × 4 =
  39. 39.579 − 16 =
  40. 40.114 + 27 =

Answer key

  1. 2401
  2. 41.1
  3. 870
  4. wrong
  5. 15
  6. 150
  7. correct
  8. 196
  9. 42
  10. 23.5
  11. 188
  12. 361
  13. 2400
  14. 24
  15. 1521
  16. 961
  17. 28
  18. 64
  19. 81
  20. 25
  21. 34
  22. 300
  23. 95
  24. 27
  25. 221
  26. wrong
  27. 189
  28. 260
  29. 271
  30. 191
  31. 420
  32. 103
  33. 17.25
  34. 1250
  35. correct
  36. 74
  37. 60
  38. 248
  39. 563
  40. 141

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