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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 46 · 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. 1.7 + 6 + 9 + 1 =
  2. 2.19 × 12 =
  3. 3.12 × 14 =
  4. 4.9 + 6 + 2 + 1 =
  5. 5.484 + 89 =
  6. 6.71² =
  7. 7.63 × 15 =
  8. 8.10% of 540 =
  9. 9.129 × 4 =
  10. 10.5% of 20 =
  11. 11.79² =
  12. 12.296 − 76 =
  13. 13.72 × 8 =
  14. 14.Best estimate of 48 × 92? (a) 45000 (b) 450 (c) 9000 (d) 4500
  15. 15.16 × 19 =
  16. 16.138 − 56 =
  17. 17.Check with nines: 574 + 976 = 1550. Correct or wrong? (a) wrong (b) correct
  18. 18.₹58.35 − ₹31.15 =
  19. 19.20 + 28 + 34 + 74 =
  20. 20.Best estimate of 59 × 41? (a) 240 (b) 24000 (c) 2400 (d) 4800
  21. 21.23 + 34 + 15 + 70 =
  22. 22.10% of 740 =
  23. 23.312 + 79 =
  24. 24.42 × 15 =
  25. 25.₹11.70 + ₹31.55 =
  26. 26.Best estimate of 82 × 42? (a) 3200 (b) 6400 (c) 32000 (d) 320
  27. 27.25% of 650 =
  28. 28.118 × 4 =
  29. 29.₹42.75 + ₹14.20 =
  30. 30.60 × 8 =
  31. 31.450 ÷ 25 =
  32. 32.₹85.55 − ₹9.15 =
  33. 33.71² =
  34. 34.8 + 8 + 5 + 9 + 2 =
  35. 35.₹37.10 − ₹5.85 =
  36. 36.12 × 18 =
  37. 37.4 + 2 + 3 + 6 =
  38. 38.115 + 38 =
  39. 39.Best estimate of 18 × 21? (a) 800 (b) 40 (c) 400 (d) 4000
  40. 40.₹15.10 − ₹11.65 =

Answer key

  1. 23
  2. 228
  3. 168
  4. 18
  5. 573
  6. 5041
  7. 945
  8. 54
  9. 516
  10. 1
  11. 6241
  12. 220
  13. 576
  14. 4500
  15. 304
  16. 82
  17. correct
  18. 27.2
  19. 156
  20. 2400
  21. 142
  22. 74
  23. 391
  24. 630
  25. 43.25
  26. 3200
  27. 162.5
  28. 472
  29. 56.95
  30. 480
  31. 18
  32. 76.4
  33. 5041
  34. 32
  35. 31.25
  36. 216
  37. 15
  38. 153
  39. 400
  40. 3.45

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