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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 580 · 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: 152 + 380 = 531. Correct or wrong? (a) correct (b) wrong
  2. 2.97 × 5 =
  3. 3.91² =
  4. 4.54 × 15 =
  5. 5.1 + 1 + 2 + 9 + 9 =
  6. 6.265 ÷ 5 =
  7. 7.1% of 280 =
  8. 8.420 + 18 =
  9. 9.79² =
  10. 10.383 + 58 =
  11. 11.Best estimate of 22 × 59? (a) 120 (b) 2400 (c) 12000 (d) 1200
  12. 12.45 × 15 =
  13. 13.14 × 16 =
  14. 14.Best estimate of 802 × 5? (a) 40000 (b) 400 (c) 8000 (d) 4000
  15. 15.₹9.45 + ₹7.40 =
  16. 16.₹60.50 − ₹31.50 =
  17. 17.30 × 15 =
  18. 18.29² =
  19. 19.289 − 37 =
  20. 20.3 + 2 + 8 + 9 + 1 =
  21. 21.74 + 61 + 60 + 21 =
  22. 22.Best estimate of 403 × 3? (a) 120 (b) 1200 (c) 12000 (d) 2400
  23. 23.720 ÷ 5 =
  24. 24.5% of 730 =
  25. 25.29² =
  26. 26.13 × 14 =
  27. 27.17 × 5 =
  28. 28.16 × 12 =
  29. 29.168 − 87 =
  30. 30.19 × 19 =
  31. 31.12 × 11 =
  32. 32.8 × 15 =
  33. 33.Best estimate of 41 × 79? (a) 32000 (b) 320 (c) 3200 (d) 6400
  34. 34.20% of 280 =
  35. 35.21² =
  36. 36.91 × 50 =
  37. 37.Check with nines: 346 + 279 = 625. Correct or wrong? (a) wrong (b) correct
  38. 38.248 − 17 =
  39. 39.158 + 69 =
  40. 40.2000 ÷ 50 =

Answer key

  1. wrong
  2. 485
  3. 8281
  4. 810
  5. 22
  6. 53
  7. 2.8
  8. 438
  9. 6241
  10. 441
  11. 1200
  12. 675
  13. 224
  14. 4000
  15. 16.85
  16. 29
  17. 450
  18. 841
  19. 252
  20. 23
  21. 216
  22. 1200
  23. 144
  24. 36.5
  25. 841
  26. 182
  27. 85
  28. 192
  29. 81
  30. 361
  31. 132
  32. 120
  33. 3200
  34. 56
  35. 441
  36. 4550
  37. correct
  38. 231
  39. 227
  40. 40

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