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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 883 · 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. 1.335 − 87 =
  2. 2.42 × 15 =
  3. 3.252 + 47 =
  4. 4.34 + 79 + 32 + 37 =
  5. 5.17 × 17 =
  6. 6.Check with nines: 962 + 162 = 1124. Correct or wrong? (a) correct (b) wrong
  7. 7.124 + 67 =
  8. 8.900 ÷ 5 =
  9. 9.59² =
  10. 10.1% of 410 =
  11. 11.700 ÷ 25 =
  12. 12.59² =
  13. 13.260 + 69 =
  14. 14.10% of 350 =
  15. 15.2000 ÷ 50 =
  16. 16.1 + 5 + 5 + 5 =
  17. 17.62 × 4 =
  18. 18.5 + 1 + 9 + 8 =
  19. 19.Best estimate of 68 × 52? (a) 35000 (b) 7000 (c) 3500 (d) 350
  20. 20.11 × 19 =
  21. 21.19 × 50 =
  22. 22.63 × 15 =
  23. 23.9 × 15 =
  24. 24.16 × 14 =
  25. 25.51 × 15 =
  26. 26.118 − 17 =
  27. 27.Check with nines: 14 × 84 = 1168. Correct or wrong? (a) wrong (b) correct
  28. 28.82 × 4 =
  29. 29.19 × 18 =
  30. 30.6 + 1 + 9 + 3 =
  31. 31.Check with nines: 178 + 495 = 680. Correct or wrong? (a) correct (b) wrong
  32. 32.₹79.45 − ₹33.10 =
  33. 33.201 + 58 =
  34. 34.16 × 12 =
  35. 35.81 × 5 =
  36. 36.347 + 19 =
  37. 37.8 + 7 + 8 + 2 =
  38. 38.8 + 5 + 3 + 2 + 2 =
  39. 39.9 + 2 + 1 + 8 =
  40. 40.Best estimate of 502 × 3? (a) 150 (b) 1500 (c) 15000 (d) 3000

Answer key

  1. 248
  2. 630
  3. 299
  4. 182
  5. 289
  6. correct
  7. 191
  8. 180
  9. 3481
  10. 4.1
  11. 28
  12. 3481
  13. 329
  14. 35
  15. 40
  16. 16
  17. 248
  18. 23
  19. 3500
  20. 209
  21. 950
  22. 945
  23. 135
  24. 224
  25. 765
  26. 101
  27. wrong
  28. 328
  29. 342
  30. 19
  31. wrong
  32. 46.35
  33. 259
  34. 192
  35. 405
  36. 366
  37. 25
  38. 20
  39. 20
  40. 1500

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