← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 900 · 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. 1.1 + 5 + 2 + 9 =
  2. 2.92 × 50 =
  3. 3.Check with nines: 31 × 94 = 2914. Correct or wrong? (a) wrong (b) correct
  4. 4.49² =
  5. 5.6 + 9 + 4 + 3 =
  6. 6.Best estimate of 103 × 9? (a) 9000 (b) 1800 (c) 90 (d) 900
  7. 7.14 × 13 =
  8. 8.212 − 78 =
  9. 9.Best estimate of 798 × 6? (a) 9600 (b) 4800 (c) 480 (d) 48000
  10. 10.50% of 780 =
  11. 11.19² =
  12. 12.Best estimate of 502 × 4? (a) 2000 (b) 4000 (c) 200 (d) 20000
  13. 13.91 × 50 =
  14. 14.17 × 19 =
  15. 15.255 − 78 =
  16. 16.10% of 590 =
  17. 17.33 × 15 =
  18. 18.259 + 89 =
  19. 19.575 ÷ 5 =
  20. 20.9 + 6 + 4 + 7 =
  21. 21.118 × 4 =
  22. 22.5% of 470 =
  23. 23.₹73.20 + ₹3.30 =
  24. 24.35 + 41 + 15 + 66 =
  25. 25.1% of 490 =
  26. 26.16 × 13 =
  27. 27.₹49.30 + ₹33.30 =
  28. 28.₹17.95 − ₹6.70 =
  29. 29.34 × 8 =
  30. 30.75 + 61 + 22 + 56 =
  31. 31.15% of 720 =
  32. 32.10% of 300 =
  33. 33.86 × 50 =
  34. 34.14 × 13 =
  35. 35.11 × 15 =
  36. 36.62 × 50 =
  37. 37.69² =
  38. 38.21 × 4 =
  39. 39.74 × 8 =
  40. 40.₹56.95 + ₹42.20 =

Answer key

  1. 17
  2. 4600
  3. correct
  4. 2401
  5. 22
  6. 900
  7. 182
  8. 134
  9. 4800
  10. 390
  11. 361
  12. 2000
  13. 4550
  14. 323
  15. 177
  16. 59
  17. 495
  18. 348
  19. 115
  20. 26
  21. 472
  22. 23.5
  23. 76.5
  24. 157
  25. 4.9
  26. 208
  27. 82.6
  28. 11.25
  29. 272
  30. 214
  31. 108
  32. 30
  33. 4300
  34. 182
  35. 165
  36. 3100
  37. 4761
  38. 84
  39. 592
  40. 99.15

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths