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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 571 · 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. 1.443 + 47 =
  2. 2.12 × 16 =
  3. 3.16 + 68 + 59 + 78 =
  4. 4.67 + 12 + 73 + 16 =
  5. 5.Best estimate of 29 × 38? (a) 12000 (b) 120 (c) 1200 (d) 2400
  6. 6.156 × 4 =
  7. 7.15% of 640 =
  8. 8.25% of 210 =
  9. 9.350 ÷ 25 =
  10. 10.Best estimate of 78 × 39? (a) 6400 (b) 3200 (c) 320 (d) 32000
  11. 11.50 + 84 + 78 + 44 =
  12. 12.₹44.45 + ₹4.90 =
  13. 13.5% of 170 =
  14. 14.226 − 78 =
  15. 15.Best estimate of 82 × 78? (a) 6400 (b) 12800 (c) 64000 (d) 640
  16. 16.6 + 3 + 3 + 7 + 4 =
  17. 17.1% of 550 =
  18. 18.64 × 8 =
  19. 19.6 + 1 + 9 + 4 =
  20. 20.248 − 78 =
  21. 21.25% of 690 =
  22. 22.90 × 50 =
  23. 23.40 × 5 =
  24. 24.₹86.80 + ₹33.20 =
  25. 25.49 + 58 =
  26. 26.Check with nines: 87 × 42 = 3655. Correct or wrong? (a) wrong (b) correct
  27. 27.11 × 19 =
  28. 28.28 × 15 =
  29. 29.₹34.90 + ₹25.15 =
  30. 30.272 − 86 =
  31. 31.36 × 15 =
  32. 32.339 − 36 =
  33. 33.38 × 15 =
  34. 34.25% of 720 =
  35. 35.89² =
  36. 36.370 + 97 =
  37. 37.333 + 27 =
  38. 38.Check with nines: 87 × 84 = 7306. Correct or wrong? (a) correct (b) wrong
  39. 39.9 + 4 + 6 + 7 + 9 =
  40. 40.39 + 49 =

Answer key

  1. 490
  2. 192
  3. 221
  4. 168
  5. 1200
  6. 624
  7. 96
  8. 52.5
  9. 14
  10. 3200
  11. 256
  12. 49.35
  13. 8.5
  14. 148
  15. 6400
  16. 23
  17. 5.5
  18. 512
  19. 20
  20. 170
  21. 172.5
  22. 4500
  23. 200
  24. 120
  25. 107
  26. wrong
  27. 209
  28. 420
  29. 60.05
  30. 186
  31. 540
  32. 303
  33. 570
  34. 180
  35. 7921
  36. 467
  37. 360
  38. wrong
  39. 35
  40. 88

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