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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 894 · 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. 1.161 + 89 =
  2. 2.22 + 87 + 53 + 78 =
  3. 3.49 + 49 =
  4. 4.15 × 17 =
  5. 5.10% of 200 =
  6. 6.416 − 97 =
  7. 7.362 − 68 =
  8. 8.67 × 50 =
  9. 9.30 + 20 + 58 + 72 =
  10. 10.₹55.40 − ₹11.50 =
  11. 11.22 × 15 =
  12. 12.56 × 8 =
  13. 13.123 − 28 =
  14. 14.14 × 11 =
  15. 15.531 − 67 =
  16. 16.89² =
  17. 17.₹23.75 + ₹21.50 =
  18. 18.49 × 5 =
  19. 19.124 + 77 =
  20. 20.56 × 50 =
  21. 21.18 × 8 =
  22. 22.22 × 4 =
  23. 23.54 × 8 =
  24. 24.Check with nines: 87 × 43 = 3741. Correct or wrong? (a) correct (b) wrong
  25. 25.17 × 11 =
  26. 26.21 × 15 =
  27. 27.329 + 69 =
  28. 28.56 × 4 =
  29. 29.18 × 5 =
  30. 30.Check with nines: 209 + 533 = 742. Correct or wrong? (a) correct (b) wrong
  31. 31.489 + 79 =
  32. 32.142 × 4 =
  33. 33.15% of 460 =
  34. 34.31 × 50 =
  35. 35.13 + 86 + 29 + 44 =
  36. 36.47 × 8 =
  37. 37.16 × 14 =
  38. 38.6 + 7 + 1 + 3 + 2 =
  39. 39.176 + 18 =
  40. 40.Best estimate of 71 × 39? (a) 28000 (b) 2800 (c) 280 (d) 5600

Answer key

  1. 250
  2. 240
  3. 98
  4. 255
  5. 20
  6. 319
  7. 294
  8. 3350
  9. 180
  10. 43.9
  11. 330
  12. 448
  13. 95
  14. 154
  15. 464
  16. 7921
  17. 45.25
  18. 245
  19. 201
  20. 2800
  21. 144
  22. 88
  23. 432
  24. correct
  25. 187
  26. 315
  27. 398
  28. 224
  29. 90
  30. correct
  31. 568
  32. 568
  33. 69
  34. 1550
  35. 172
  36. 376
  37. 224
  38. 19
  39. 194
  40. 2800

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