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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 247 · 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.₹76.70 + ₹39.15 =
  2. 2.89 − 46 =
  3. 3.150 ÷ 25 =
  4. 4.76 + 63 + 54 + 43 =
  5. 5.153 + 27 =
  6. 6.Check with nines: 490 + 139 = 629. Correct or wrong? (a) correct (b) wrong
  7. 7.49² =
  8. 8.62 × 15 =
  9. 9.58 × 5 =
  10. 10.Best estimate of 301 × 8? (a) 4800 (b) 2400 (c) 24000 (d) 240
  11. 11.48 × 50 =
  12. 12.₹28.45 + ₹5.50 =
  13. 13.16 × 8 =
  14. 14.13 × 11 =
  15. 15.53 × 4 =
  16. 16.203 − 17 =
  17. 17.20% of 140 =
  18. 18.277 + 28 =
  19. 19.20% of 90 =
  20. 20.23 × 15 =
  21. 21.25 × 8 =
  22. 22.306 − 46 =
  23. 23.10% of 130 =
  24. 24.₹43.25 − ₹33.95 =
  25. 25.62 × 5 =
  26. 26.Best estimate of 41 × 62? (a) 2400 (b) 4800 (c) 240 (d) 24000
  27. 27.136 × 4 =
  28. 28.₹46.80 − ₹36.50 =
  29. 29.303 − 27 =
  30. 30.32 × 50 =
  31. 31.29 × 50 =
  32. 32.11 × 18 =
  33. 33.32 × 4 =
  34. 34.20 × 5 =
  35. 35.14 × 19 =
  36. 36.Best estimate of 42 × 88? (a) 360 (b) 36000 (c) 3600 (d) 7200
  37. 37.Best estimate of 702 × 3? (a) 2100 (b) 210 (c) 21000 (d) 4200
  38. 38.₹10.30 + ₹22.50 =
  39. 39.39² =
  40. 40.4 + 6 + 6 + 4 + 9 =

Answer key

  1. 115.85
  2. 43
  3. 6
  4. 236
  5. 180
  6. correct
  7. 2401
  8. 930
  9. 290
  10. 2400
  11. 2400
  12. 33.95
  13. 128
  14. 143
  15. 212
  16. 186
  17. 28
  18. 305
  19. 18
  20. 345
  21. 200
  22. 260
  23. 13
  24. 9.3
  25. 310
  26. 2400
  27. 544
  28. 10.3
  29. 276
  30. 1600
  31. 1450
  32. 198
  33. 128
  34. 100
  35. 266
  36. 3600
  37. 2100
  38. 32.8
  39. 1521
  40. 29

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