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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 144 · 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. 1.23 × 4 =
  2. 2.49 × 50 =
  3. 3.15 × 15 =
  4. 4.1% of 710 =
  5. 5.64 × 50 =
  6. 6.₹16.30 + ₹28.30 =
  7. 7.Best estimate of 52 × 59? (a) 3000 (b) 30000 (c) 6000 (d) 300
  8. 8.₹55.30 − ₹6.85 =
  9. 9.52 × 15 =
  10. 10.7 × 15 =
  11. 11.28 × 15 =
  12. 12.21² =
  13. 13.₹45.10 + ₹2.15 =
  14. 14.Check with nines: 84 × 91 = 7644. Correct or wrong? (a) wrong (b) correct
  15. 15.Best estimate of 197 × 5? (a) 100 (b) 2000 (c) 1000 (d) 10000
  16. 16.51² =
  17. 17.59 × 15 =
  18. 18.479 + 69 =
  19. 19.830 ÷ 5 =
  20. 20.51 × 15 =
  21. 21.13 × 14 =
  22. 22.82 + 61 + 22 + 70 =
  23. 23.87 × 50 =
  24. 24.1 + 3 + 1 + 9 + 1 =
  25. 25.Best estimate of 101 × 6? (a) 60 (b) 1200 (c) 6000 (d) 600
  26. 26.16 × 17 =
  27. 27.399 + 89 =
  28. 28.₹33.95 + ₹38.15 =
  29. 29.8 + 2 + 2 + 8 + 5 =
  30. 30.61² =
  31. 31.168 − 76 =
  32. 32.20 × 15 =
  33. 33.12 × 11 =
  34. 34.₹11.60 − ₹7.85 =
  35. 35.10% of 620 =
  36. 36.9 + 1 + 4 + 6 + 3 =
  37. 37.15% of 880 =
  38. 38.1450 ÷ 50 =
  39. 39.147 + 98 =
  40. 40.₹20.80 + ₹29.05 =

Answer key

  1. 92
  2. 2450
  3. 225
  4. 7.1
  5. 3200
  6. 44.6
  7. 3000
  8. 48.45
  9. 780
  10. 105
  11. 420
  12. 441
  13. 47.25
  14. correct
  15. 1000
  16. 2601
  17. 885
  18. 548
  19. 166
  20. 765
  21. 182
  22. 235
  23. 4350
  24. 15
  25. 600
  26. 272
  27. 488
  28. 72.1
  29. 25
  30. 3721
  31. 92
  32. 300
  33. 132
  34. 3.75
  35. 62
  36. 23
  37. 132
  38. 29
  39. 245
  40. 49.85

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