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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 65 · 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.Best estimate of 403 × 8? (a) 320 (b) 6400 (c) 32000 (d) 3200
  2. 2.₹22.75 + ₹36.10 =
  3. 3.548 − 28 =
  4. 4.7 + 9 + 3 + 4 + 9 =
  5. 5.84 + 64 + 18 + 25 =
  6. 6.411 + 67 =
  7. 7.Best estimate of 42 × 18? (a) 1600 (b) 8000 (c) 80 (d) 800
  8. 8.82 × 5 =
  9. 9.150 ÷ 5 =
  10. 10.19² =
  11. 11.16 × 16 =
  12. 12.1050 ÷ 50 =
  13. 13.14 × 15 =
  14. 14.89 + 76 + 54 + 87 =
  15. 15.1 + 4 + 9 + 1 =
  16. 16.1400 ÷ 25 =
  17. 17.55 × 15 =
  18. 18.141 + 88 =
  19. 19.20 × 15 =
  20. 20.5 + 3 + 3 + 6 + 4 =
  21. 21.29² =
  22. 22.₹39.55 − ₹20.60 =
  23. 23.12 × 11 =
  24. 24.₹45.05 − ₹39.10 =
  25. 25.325 ÷ 25 =
  26. 26.46 + 57 =
  27. 27.Check with nines: 38 × 73 = 2777. Correct or wrong? (a) wrong (b) correct
  28. 28.86 + 16 + 44 + 33 =
  29. 29.454 + 89 =
  30. 30.5% of 450 =
  31. 31.156 × 4 =
  32. 32.50% of 170 =
  33. 33.69² =
  34. 34.6 + 3 + 2 + 1 + 4 =
  35. 35.65 + 16 + 13 + 69 =
  36. 36.Best estimate of 22 × 39? (a) 800 (b) 1600 (c) 8000 (d) 80
  37. 37.117 − 87 =
  38. 38.5% of 170 =
  39. 39.850 ÷ 50 =
  40. 40.₹32.05 − ₹31.10 =

Answer key

  1. 3200
  2. 58.85
  3. 520
  4. 32
  5. 191
  6. 478
  7. 800
  8. 410
  9. 30
  10. 361
  11. 256
  12. 21
  13. 210
  14. 306
  15. 15
  16. 56
  17. 825
  18. 229
  19. 300
  20. 21
  21. 841
  22. 18.95
  23. 132
  24. 5.95
  25. 13
  26. 103
  27. wrong
  28. 179
  29. 543
  30. 22.5
  31. 624
  32. 85
  33. 4761
  34. 16
  35. 163
  36. 800
  37. 30
  38. 8.5
  39. 17
  40. 0.95

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