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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 994 · 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. 1.188 − 16 =
  2. 2.₹50.30 + ₹24.80 =
  3. 3.135 + 88 =
  4. 4.248 − 19 =
  5. 5.725 ÷ 25 =
  6. 6.83 × 5 =
  7. 7.21² =
  8. 8.105 − 26 =
  9. 9.1 + 2 + 9 + 5 + 2 =
  10. 10.109 − 38 =
  11. 11.53 + 15 + 68 + 26 =
  12. 12.55 × 15 =
  13. 13.51² =
  14. 14.26 + 31 + 27 + 24 =
  15. 15.11 × 14 =
  16. 16.₹73.50 + ₹10.10 =
  17. 17.41² =
  18. 18.18 × 13 =
  19. 19.412 + 19 =
  20. 20.28 × 8 =
  21. 21.77 + 64 + 89 + 26 =
  22. 22.17 × 12 =
  23. 23.77 × 5 =
  24. 24.Check with nines: 98 × 54 = 5292. Correct or wrong? (a) wrong (b) correct
  25. 25.₹66.60 − ₹30.25 =
  26. 26.107 × 4 =
  27. 27.46 × 8 =
  28. 28.393 + 18 =
  29. 29.19² =
  30. 30.116 − 18 =
  31. 31.20 + 20 + 56 + 28 =
  32. 32.40 × 15 =
  33. 33.86 × 4 =
  34. 34.4 + 4 + 6 + 4 =
  35. 35.484 − 29 =
  36. 36.Best estimate of 21 × 18? (a) 40 (b) 400 (c) 800 (d) 4000
  37. 37.6 + 4 + 3 + 3 + 1 =
  38. 38.26 × 8 =
  39. 39.14 × 18 =
  40. 40.63 × 15 =

Answer key

  1. 172
  2. 75.1
  3. 223
  4. 229
  5. 29
  6. 415
  7. 441
  8. 79
  9. 19
  10. 71
  11. 162
  12. 825
  13. 2601
  14. 108
  15. 154
  16. 83.6
  17. 1681
  18. 234
  19. 431
  20. 224
  21. 256
  22. 204
  23. 385
  24. correct
  25. 36.35
  26. 428
  27. 368
  28. 411
  29. 361
  30. 98
  31. 124
  32. 600
  33. 344
  34. 18
  35. 455
  36. 400
  37. 17
  38. 208
  39. 252
  40. 945

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