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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 353 · 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. 1.11 × 12 =
  2. 2.496 − 38 =
  3. 3.69 × 4 =
  4. 4.9 × 15 =
  5. 5.2 + 7 + 8 + 2 =
  6. 6.320 ÷ 5 =
  7. 7.28 + 66 + 30 + 59 =
  8. 8.1 + 9 + 1 + 9 =
  9. 9.29² =
  10. 10.29² =
  11. 11.73 − 39 =
  12. 12.89² =
  13. 13.Check with nines: 41 × 90 = 3691. Correct or wrong? (a) correct (b) wrong
  14. 14.21 × 5 =
  15. 15.115 + 69 =
  16. 16.1 + 8 + 3 + 1 + 2 =
  17. 17.154 + 49 =
  18. 18.Best estimate of 68 × 88? (a) 6300 (b) 630 (c) 12600 (d) 63000
  19. 19.11 × 19 =
  20. 20.15% of 50 =
  21. 21.21 × 15 =
  22. 22.399 − 18 =
  23. 23.30 × 50 =
  24. 24.Best estimate of 98 × 7? (a) 1400 (b) 70 (c) 700 (d) 7000
  25. 25.₹33.50 − ₹29.45 =
  26. 26.166 − 78 =
  27. 27.1% of 790 =
  28. 28.₹16.10 + ₹36.85 =
  29. 29.41² =
  30. 30.10% of 30 =
  31. 31.19 × 15 =
  32. 32.5 + 7 + 6 + 3 =
  33. 33.7 + 1 + 2 + 3 =
  34. 34.Best estimate of 797 × 5? (a) 8000 (b) 4000 (c) 40000 (d) 400
  35. 35.16 × 14 =
  36. 36.207 + 19 =
  37. 37.9 + 6 + 2 + 4 =
  38. 38.16 × 15 =
  39. 39.11 + 60 + 64 + 53 =
  40. 40.Best estimate of 301 × 4? (a) 1200 (b) 12000 (c) 2400 (d) 120

Answer key

  1. 132
  2. 458
  3. 276
  4. 135
  5. 19
  6. 64
  7. 183
  8. 20
  9. 841
  10. 841
  11. 34
  12. 7921
  13. wrong
  14. 105
  15. 184
  16. 15
  17. 203
  18. 6300
  19. 209
  20. 7.5
  21. 315
  22. 381
  23. 1500
  24. 700
  25. 4.05
  26. 88
  27. 7.9
  28. 52.95
  29. 1681
  30. 3
  31. 285
  32. 21
  33. 13
  34. 4000
  35. 224
  36. 226
  37. 21
  38. 240
  39. 188
  40. 1200

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