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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 650 · 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. 1.6 + 1 + 3 + 4 + 9 =
  2. 2.204 − 56 =
  3. 3.13 × 16 =
  4. 4.Best estimate of 52 × 72? (a) 350 (b) 35000 (c) 7000 (d) 3500
  5. 5.Best estimate of 29 × 78? (a) 240 (b) 24000 (c) 4800 (d) 2400
  6. 6.354 − 66 =
  7. 7.5 × 15 =
  8. 8.10% of 660 =
  9. 9.12 × 12 =
  10. 10.19² =
  11. 11.20% of 180 =
  12. 12.181 + 29 =
  13. 13.10% of 110 =
  14. 14.Best estimate of 401 × 8? (a) 320 (b) 32000 (c) 3200 (d) 6400
  15. 15.69² =
  16. 16.₹40.65 − ₹13.70 =
  17. 17.37 + 13 + 32 + 45 =
  18. 18.27 × 8 =
  19. 19.Check with nines: 45 × 68 = 3068. Correct or wrong? (a) wrong (b) correct
  20. 20.18 × 15 =
  21. 21.205 ÷ 5 =
  22. 22.5 + 1 + 5 + 4 =
  23. 23.1900 ÷ 50 =
  24. 24.10% of 410 =
  25. 25.390 − 28 =
  26. 26.70 × 4 =
  27. 27.6 + 8 + 2 + 8 =
  28. 28.7 + 4 + 3 + 9 =
  29. 29.7 + 2 + 8 + 8 =
  30. 30.500 ÷ 50 =
  31. 31.489 + 87 =
  32. 32.24 + 22 + 19 + 76 =
  33. 33.₹48.20 + ₹22.65 =
  34. 34.Check with nines: 41 × 25 = 1026. Correct or wrong? (a) wrong (b) correct
  35. 35.236 + 98 =
  36. 36.₹41.95 + ₹6.30 =
  37. 37.10% of 580 =
  38. 38.5 + 8 + 6 + 5 + 4 =
  39. 39.39² =
  40. 40.₹28.25 − ₹15.75 =

Answer key

  1. 23
  2. 148
  3. 208
  4. 3500
  5. 2400
  6. 288
  7. 75
  8. 66
  9. 144
  10. 361
  11. 36
  12. 210
  13. 11
  14. 3200
  15. 4761
  16. 26.95
  17. 127
  18. 216
  19. wrong
  20. 270
  21. 41
  22. 15
  23. 38
  24. 41
  25. 362
  26. 280
  27. 24
  28. 23
  29. 25
  30. 10
  31. 576
  32. 141
  33. 70.85
  34. wrong
  35. 334
  36. 48.25
  37. 58
  38. 28
  39. 1521
  40. 12.5

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