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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 179 · 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.Check with nines: 65 × 22 = 1430. Correct or wrong? (a) wrong (b) correct
  2. 2.50 × 5 =
  3. 3.399 + 28 =
  4. 4.39² =
  5. 5.74 + 73 + 32 + 49 =
  6. 6.61 × 15 =
  7. 7.70 × 50 =
  8. 8.Check with nines: 803 + 970 = 1773. Correct or wrong? (a) wrong (b) correct
  9. 9.107 − 37 =
  10. 10.88 + 85 + 33 + 58 =
  11. 11.₹55.80 + ₹23.35 =
  12. 12.81² =
  13. 13.Best estimate of 901 × 6? (a) 10800 (b) 54000 (c) 540 (d) 5400
  14. 14.14 × 11 =
  15. 15.22 + 76 + 63 + 84 =
  16. 16.78 × 4 =
  17. 17.Check with nines: 264 + 990 = 1254. Correct or wrong? (a) wrong (b) correct
  18. 18.71² =
  19. 19.15% of 370 =
  20. 20.10% of 580 =
  21. 21.960 ÷ 5 =
  22. 22.24 × 8 =
  23. 23.90 ÷ 5 =
  24. 24.13 × 18 =
  25. 25.19 × 50 =
  26. 26.17 × 11 =
  27. 27.11 × 18 =
  28. 28.85 − 16 =
  29. 29.56 × 4 =
  30. 30.5% of 240 =
  31. 31.100 ÷ 5 =
  32. 32.19 × 14 =
  33. 33.₹71.20 − ₹5.10 =
  34. 34.70 × 50 =
  35. 35.30 × 5 =
  36. 36.41 × 8 =
  37. 37.Check with nines: 474 + 766 = 1241. Correct or wrong? (a) wrong (b) correct
  38. 38.5 + 1 + 7 + 5 + 5 =
  39. 39.10% of 150 =
  40. 40.33 × 15 =

Answer key

  1. correct
  2. 250
  3. 427
  4. 1521
  5. 228
  6. 915
  7. 3500
  8. correct
  9. 70
  10. 264
  11. 79.15
  12. 6561
  13. 5400
  14. 154
  15. 245
  16. 312
  17. correct
  18. 5041
  19. 55.5
  20. 58
  21. 192
  22. 192
  23. 18
  24. 234
  25. 950
  26. 187
  27. 198
  28. 69
  29. 224
  30. 12
  31. 20
  32. 266
  33. 66.1
  34. 3500
  35. 150
  36. 328
  37. wrong
  38. 23
  39. 15
  40. 495

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