← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 123 · 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. 1.62 × 15 =
  2. 2.78 × 5 =
  3. 3.Check with nines: 62 × 96 = 5952. Correct or wrong? (a) correct (b) wrong
  4. 4.32 × 15 =
  5. 5.Check with nines: 445 + 716 = 1161. Correct or wrong? (a) correct (b) wrong
  6. 6.5% of 740 =
  7. 7.69 × 8 =
  8. 8.Best estimate of 502 × 3? (a) 3000 (b) 1500 (c) 150 (d) 15000
  9. 9.22 + 27 + 55 + 47 =
  10. 10.135 ÷ 5 =
  11. 11.₹16.85 + ₹4.40 =
  12. 12.566 − 27 =
  13. 13.59² =
  14. 14.₹53.25 − ₹36.05 =
  15. 15.69² =
  16. 16.16 × 14 =
  17. 17.41² =
  18. 18.61² =
  19. 19.5% of 410 =
  20. 20.Best estimate of 61 × 52? (a) 30000 (b) 3000 (c) 6000 (d) 300
  21. 21.₹23.75 + ₹3.95 =
  22. 22.4 + 6 + 4 + 9 + 7 =
  23. 23.426 − 98 =
  24. 24.₹26.15 + ₹9.70 =
  25. 25.7 + 3 + 7 + 7 + 7 =
  26. 26.245 − 16 =
  27. 27.51 × 5 =
  28. 28.50% of 330 =
  29. 29.64 × 15 =
  30. 30.178 − 59 =
  31. 31.162 − 99 =
  32. 32.17 × 15 =
  33. 33.10% of 710 =
  34. 34.29² =
  35. 35.185 − 86 =
  36. 36.25% of 410 =
  37. 37.15% of 420 =
  38. 38.12 × 11 =
  39. 39.33 + 77 + 42 + 16 =
  40. 40.128 − 86 =

Answer key

  1. 930
  2. 390
  3. correct
  4. 480
  5. correct
  6. 37
  7. 552
  8. 1500
  9. 151
  10. 27
  11. 21.25
  12. 539
  13. 3481
  14. 17.2
  15. 4761
  16. 224
  17. 1681
  18. 3721
  19. 20.5
  20. 3000
  21. 27.7
  22. 30
  23. 328
  24. 35.85
  25. 31
  26. 229
  27. 255
  28. 165
  29. 960
  30. 119
  31. 63
  32. 255
  33. 71
  34. 841
  35. 99
  36. 102.5
  37. 63
  38. 132
  39. 168
  40. 42

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