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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 223 · 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. 1.419 + 19 =
  2. 2.Check with nines: 61 × 27 = 1651. Correct or wrong? (a) wrong (b) correct
  3. 3.Best estimate of 62 × 88? (a) 540 (b) 54000 (c) 10800 (d) 5400
  4. 4.61² =
  5. 5.21 × 15 =
  6. 6.334 + 47 =
  7. 7.91² =
  8. 8.₹79.65 + ₹21.15 =
  9. 9.10% of 120 =
  10. 10.176 + 38 =
  11. 11.42 × 5 =
  12. 12.66 × 5 =
  13. 13.41² =
  14. 14.10% of 290 =
  15. 15.Best estimate of 88 × 78? (a) 14400 (b) 7200 (c) 72000 (d) 720
  16. 16.12 × 17 =
  17. 17.3 + 7 + 7 + 2 + 8 =
  18. 18.7 + 3 + 3 + 8 =
  19. 19.81² =
  20. 20.40 × 15 =
  21. 21.76 + 56 + 67 + 55 =
  22. 22.19² =
  23. 23.26 + 71 + 22 + 25 =
  24. 24.12 × 18 =
  25. 25.12 × 18 =
  26. 26.80 × 50 =
  27. 27.₹14.45 − ₹11.40 =
  28. 28.20% of 850 =
  29. 29.321 + 27 =
  30. 30.44 × 15 =
  31. 31.83 × 5 =
  32. 32.13 × 12 =
  33. 33.55 + 26 + 68 + 31 =
  34. 34.25 × 15 =
  35. 35.₹33.30 − ₹9.95 =
  36. 36.35 × 5 =
  37. 37.Check with nines: 987 + 348 = 1335. Correct or wrong? (a) correct (b) wrong
  38. 38.86 × 50 =
  39. 39.5 + 5 + 9 + 2 =
  40. 40.8 × 15 =

Answer key

  1. 438
  2. wrong
  3. 5400
  4. 3721
  5. 315
  6. 381
  7. 8281
  8. 100.8
  9. 12
  10. 214
  11. 210
  12. 330
  13. 1681
  14. 29
  15. 7200
  16. 204
  17. 27
  18. 21
  19. 6561
  20. 600
  21. 254
  22. 361
  23. 144
  24. 216
  25. 216
  26. 4000
  27. 3.05
  28. 170
  29. 348
  30. 660
  31. 415
  32. 156
  33. 180
  34. 375
  35. 23.35
  36. 175
  37. correct
  38. 4300
  39. 21
  40. 120

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