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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 895 · 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. 1.10% of 640 =
  2. 2.₹35.35 − ₹30.85 =
  3. 3.Check with nines: 330 + 173 = 498. Correct or wrong? (a) correct (b) wrong
  4. 4.38 × 15 =
  5. 5.41 × 4 =
  6. 6.573 − 27 =
  7. 7.875 ÷ 25 =
  8. 8.145 ÷ 5 =
  9. 9.54 × 5 =
  10. 10.24 × 15 =
  11. 11.475 − 79 =
  12. 12.113 × 4 =
  13. 13.Best estimate of 98 × 7? (a) 7000 (b) 70 (c) 1400 (d) 700
  14. 14.50 + 19 + 51 + 77 =
  15. 15.60 × 5 =
  16. 16.79 + 49 =
  17. 17.₹60.25 + ₹5.90 =
  18. 18.193 − 37 =
  19. 19.20 × 50 =
  20. 20.84 + 80 + 85 + 67 =
  21. 21.15 × 5 =
  22. 22.81 + 49 =
  23. 23.526 − 47 =
  24. 24.₹46.30 − ₹10.10 =
  25. 25.273 − 37 =
  26. 26.544 − 16 =
  27. 27.Best estimate of 21 × 79? (a) 16000 (b) 3200 (c) 160 (d) 1600
  28. 28.116 × 4 =
  29. 29.12 × 13 =
  30. 30.54 × 4 =
  31. 31.Best estimate of 703 × 3? (a) 4200 (b) 210 (c) 21000 (d) 2100
  32. 32.49 × 15 =
  33. 33.90 × 5 =
  34. 34.Check with nines: 311 + 361 = 672. Correct or wrong? (a) wrong (b) correct
  35. 35.202 + 88 =
  36. 36.370 + 97 =
  37. 37.81 + 24 + 32 + 26 =
  38. 38.700 ÷ 5 =
  39. 39.1 + 6 + 9 + 4 =
  40. 40.14 × 15 =

Answer key

  1. 64
  2. 4.5
  3. wrong
  4. 570
  5. 164
  6. 546
  7. 35
  8. 29
  9. 270
  10. 360
  11. 396
  12. 452
  13. 700
  14. 197
  15. 300
  16. 128
  17. 66.15
  18. 156
  19. 1000
  20. 316
  21. 75
  22. 130
  23. 479
  24. 36.2
  25. 236
  26. 528
  27. 1600
  28. 464
  29. 156
  30. 216
  31. 2100
  32. 735
  33. 450
  34. correct
  35. 290
  36. 467
  37. 163
  38. 140
  39. 20
  40. 210

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