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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 370 · 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. 1.8 + 6 + 8 + 7 + 4 =
  2. 2.50% of 320 =
  3. 3.Best estimate of 201 × 9? (a) 3600 (b) 1800 (c) 180 (d) 18000
  4. 4.5 × 15 =
  5. 5.74 × 5 =
  6. 6.525 ÷ 5 =
  7. 7.79² =
  8. 8.41² =
  9. 9.450 ÷ 25 =
  10. 10.382 − 17 =
  11. 11.13 × 11 =
  12. 12.Check with nines: 41 × 79 = 3237. Correct or wrong? (a) correct (b) wrong
  13. 13.Best estimate of 298 × 9? (a) 2700 (b) 5400 (c) 27000 (d) 270
  14. 14.10% of 270 =
  15. 15.41² =
  16. 16.402 + 18 =
  17. 17.90 × 4 =
  18. 18.Best estimate of 399 × 6? (a) 24000 (b) 240 (c) 2400 (d) 4800
  19. 19.56 × 8 =
  20. 20.32 × 50 =
  21. 21.63 × 50 =
  22. 22.92 + 68 =
  23. 23.650 ÷ 25 =
  24. 24.145 ÷ 5 =
  25. 25.₹54.30 − ₹11.35 =
  26. 26.129 − 18 =
  27. 27.49 × 5 =
  28. 28.319 + 68 =
  29. 29.49² =
  30. 30.50% of 880 =
  31. 31.42 + 38 =
  32. 32.1425 ÷ 25 =
  33. 33.58 × 15 =
  34. 34.34 + 72 + 13 + 81 =
  35. 35.100 ÷ 25 =
  36. 36.10% of 510 =
  37. 37.Best estimate of 31 × 72? (a) 210 (b) 4200 (c) 21000 (d) 2100
  38. 38.Best estimate of 61 × 59? (a) 360 (b) 3600 (c) 7200 (d) 36000
  39. 39.98 + 27 =
  40. 40.9 + 8 + 1 + 1 + 2 =

Answer key

  1. 33
  2. 160
  3. 1800
  4. 75
  5. 370
  6. 105
  7. 6241
  8. 1681
  9. 18
  10. 365
  11. 143
  12. wrong
  13. 2700
  14. 27
  15. 1681
  16. 420
  17. 360
  18. 2400
  19. 448
  20. 1600
  21. 3150
  22. 160
  23. 26
  24. 29
  25. 42.95
  26. 111
  27. 245
  28. 387
  29. 2401
  30. 440
  31. 80
  32. 57
  33. 870
  34. 200
  35. 4
  36. 51
  37. 2100
  38. 3600
  39. 125
  40. 21

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