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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 189 · 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 903 × 6? (a) 10800 (b) 540 (c) 54000 (d) 5400
  2. 2.157 − 57 =
  3. 3.3 + 1 + 7 + 3 =
  4. 4.119 − 39 =
  5. 5.23 + 82 + 67 + 30 =
  6. 6.95 × 4 =
  7. 7.82 × 5 =
  8. 8.Check with nines: 995 + 181 = 1176. Correct or wrong? (a) correct (b) wrong
  9. 9.1150 ÷ 25 =
  10. 10.4 × 15 =
  11. 11.8 + 1 + 2 + 3 =
  12. 12.15% of 400 =
  13. 13.203 + 99 =
  14. 14.8 + 9 + 4 + 6 + 1 =
  15. 15.36 × 15 =
  16. 16.89² =
  17. 17.₹42.75 + ₹20.35 =
  18. 18.76 + 17 + 12 + 28 =
  19. 19.2 + 9 + 8 + 3 + 7 =
  20. 20.1 + 3 + 9 + 5 =
  21. 21.1 + 2 + 3 + 1 + 9 =
  22. 22.36 × 5 =
  23. 23.Best estimate of 399 × 5? (a) 2000 (b) 200 (c) 4000 (d) 20000
  24. 24.190 − 99 =
  25. 25.31² =
  26. 26.283 + 68 =
  27. 27.12 × 11 =
  28. 28.Best estimate of 197 × 4? (a) 1600 (b) 8000 (c) 800 (d) 80
  29. 29.51 × 15 =
  30. 30.9 + 8 + 6 + 8 + 2 =
  31. 31.15 × 15 =
  32. 32.42 + 87 =
  33. 33.₹88.90 + ₹27.45 =
  34. 34.₹91.95 − ₹11.95 =
  35. 35.14 × 16 =
  36. 36.₹58.85 − ₹26.60 =
  37. 37.461 + 28 =
  38. 38.25 × 15 =
  39. 39.13 × 12 =
  40. 40.₹90.50 + ₹2.35 =

Answer key

  1. 5400
  2. 100
  3. 14
  4. 80
  5. 202
  6. 380
  7. 410
  8. correct
  9. 46
  10. 60
  11. 14
  12. 60
  13. 302
  14. 28
  15. 540
  16. 7921
  17. 63.1
  18. 133
  19. 29
  20. 18
  21. 16
  22. 180
  23. 2000
  24. 91
  25. 961
  26. 351
  27. 132
  28. 800
  29. 765
  30. 33
  31. 225
  32. 129
  33. 116.35
  34. 80
  35. 224
  36. 32.25
  37. 489
  38. 375
  39. 156
  40. 92.85

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