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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 880 · 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. 1.1125 ÷ 25 =
  2. 2.Check with nines: 63 × 86 = 5418. Correct or wrong? (a) wrong (b) correct
  3. 3.61 × 5 =
  4. 4.1375 ÷ 25 =
  5. 5.400 − 47 =
  6. 6.Best estimate of 49 × 18? (a) 2000 (b) 1000 (c) 100 (d) 10000
  7. 7.7 × 15 =
  8. 8.1% of 270 =
  9. 9.21² =
  10. 10.63 × 5 =
  11. 11.275 + 98 =
  12. 12.5 + 9 + 1 + 4 =
  13. 13.₹82.80 + ₹11.80 =
  14. 14.303 − 37 =
  15. 15.122 − 79 =
  16. 16.354 − 86 =
  17. 17.28 + 52 + 34 + 81 =
  18. 18.Check with nines: 44 × 13 = 574. Correct or wrong? (a) wrong (b) correct
  19. 19.61 × 50 =
  20. 20.288 + 77 =
  21. 21.466 − 96 =
  22. 22.835 ÷ 5 =
  23. 23.139 − 97 =
  24. 24.16 × 5 =
  25. 25.51² =
  26. 26.5% of 540 =
  27. 27.₹47.45 − ₹19.40 =
  28. 28.144 × 4 =
  29. 29.3 + 7 + 6 + 8 + 4 =
  30. 30.₹61.20 + ₹23.35 =
  31. 31.88 × 50 =
  32. 32.Check with nines: 63 × 84 = 5292. Correct or wrong? (a) correct (b) wrong
  33. 33.7 + 4 + 2 + 1 + 6 =
  34. 34.454 + 28 =
  35. 35.12 × 16 =
  36. 36.71 − 17 =
  37. 37.56 × 15 =
  38. 38.26 × 8 =
  39. 39.74 + 34 + 81 + 54 =
  40. 40.1900 ÷ 50 =

Answer key

  1. 45
  2. correct
  3. 305
  4. 55
  5. 353
  6. 1000
  7. 105
  8. 2.7
  9. 441
  10. 315
  11. 373
  12. 19
  13. 94.6
  14. 266
  15. 43
  16. 268
  17. 195
  18. wrong
  19. 3050
  20. 365
  21. 370
  22. 167
  23. 42
  24. 80
  25. 2601
  26. 27
  27. 28.05
  28. 576
  29. 28
  30. 84.55
  31. 4400
  32. correct
  33. 20
  34. 482
  35. 192
  36. 54
  37. 840
  38. 208
  39. 243
  40. 38

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