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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 611 · 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. 1.19 × 15 =
  2. 2.381 + 78 =
  3. 3.Best estimate of 398 × 4? (a) 1600 (b) 160 (c) 16000 (d) 3200
  4. 4.9 + 1 + 8 + 1 + 1 =
  5. 5.4 + 7 + 5 + 9 + 1 =
  6. 6.12 × 14 =
  7. 7.21 × 15 =
  8. 8.46 × 4 =
  9. 9.20% of 800 =
  10. 10.183 + 17 =
  11. 11.4 + 8 + 3 + 6 =
  12. 12.225 ÷ 25 =
  13. 13.57 × 15 =
  14. 14.16 × 16 =
  15. 15.19² =
  16. 16.29 × 5 =
  17. 17.41 × 8 =
  18. 18.16 × 17 =
  19. 19.Best estimate of 201 × 5? (a) 2000 (b) 1000 (c) 10000 (d) 100
  20. 20.4 + 8 + 5 + 2 =
  21. 21.315 − 17 =
  22. 22.11 × 14 =
  23. 23.39 × 15 =
  24. 24.11 × 18 =
  25. 25.89² =
  26. 26.51² =
  27. 27.₹72.40 + ₹4.80 =
  28. 28.Check with nines: 85 × 53 = 4500. Correct or wrong? (a) wrong (b) correct
  29. 29.44 × 15 =
  30. 30.29 × 4 =
  31. 31.Check with nines: 28 × 54 = 1510. Correct or wrong? (a) wrong (b) correct
  32. 32.67 + 35 + 29 + 35 =
  33. 33.172 − 38 =
  34. 34.29 + 60 + 67 + 20 =
  35. 35.₹57.55 + ₹2.80 =
  36. 36.13 × 12 =
  37. 37.1 + 4 + 6 + 6 =
  38. 38.49 + 47 =
  39. 39.31 × 4 =
  40. 40.14 × 14 =

Answer key

  1. 285
  2. 459
  3. 1600
  4. 20
  5. 26
  6. 168
  7. 315
  8. 184
  9. 160
  10. 200
  11. 21
  12. 9
  13. 855
  14. 256
  15. 361
  16. 145
  17. 328
  18. 272
  19. 1000
  20. 19
  21. 298
  22. 154
  23. 585
  24. 198
  25. 7921
  26. 2601
  27. 77.2
  28. wrong
  29. 660
  30. 116
  31. wrong
  32. 166
  33. 134
  34. 176
  35. 60.35
  36. 156
  37. 17
  38. 96
  39. 124
  40. 196

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