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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 443 · 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. 1.20 × 15 =
  2. 2.Best estimate of 18 × 58? (a) 2400 (b) 12000 (c) 120 (d) 1200
  3. 3.53 × 15 =
  4. 4.Check with nines: 68 × 34 = 2312. Correct or wrong? (a) wrong (b) correct
  5. 5.203 − 66 =
  6. 6.71 × 8 =
  7. 7.178 + 68 =
  8. 8.74 × 50 =
  9. 9.550 ÷ 50 =
  10. 10.19 × 14 =
  11. 11.32 × 5 =
  12. 12.55 × 15 =
  13. 13.51 × 15 =
  14. 14.Best estimate of 82 × 69? (a) 560 (b) 5600 (c) 56000 (d) 11200
  15. 15.₹45.65 + ₹31.95 =
  16. 16.58 + 49 + 76 + 45 =
  17. 17.25% of 890 =
  18. 18.6 + 5 + 8 + 5 =
  19. 19.750 ÷ 25 =
  20. 20.18 × 11 =
  21. 21.62 × 4 =
  22. 22.Check with nines: 48 × 56 = 2688. Correct or wrong? (a) wrong (b) correct
  23. 23.11 × 16 =
  24. 24.236 + 67 =
  25. 25.20% of 390 =
  26. 26.55 × 5 =
  27. 27.95 × 4 =
  28. 28.75 × 5 =
  29. 29.60 × 15 =
  30. 30.4 + 6 + 5 + 3 + 8 =
  31. 31.12 × 13 =
  32. 32.82 × 4 =
  33. 33.154 − 87 =
  34. 34.31² =
  35. 35.8 × 15 =
  36. 36.61² =
  37. 37.6 + 9 + 6 + 1 =
  38. 38.19² =
  39. 39.1075 ÷ 25 =
  40. 40.51² =

Answer key

  1. 300
  2. 1200
  3. 795
  4. correct
  5. 137
  6. 568
  7. 246
  8. 3700
  9. 11
  10. 266
  11. 160
  12. 825
  13. 765
  14. 5600
  15. 77.6
  16. 228
  17. 222.5
  18. 24
  19. 30
  20. 198
  21. 248
  22. correct
  23. 176
  24. 303
  25. 78
  26. 275
  27. 380
  28. 375
  29. 900
  30. 26
  31. 156
  32. 328
  33. 67
  34. 961
  35. 120
  36. 3721
  37. 22
  38. 361
  39. 43
  40. 2601

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