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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 455 · 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. 1.22 × 15 =
  2. 2.Check with nines: 58 × 23 = 1334. Correct or wrong? (a) correct (b) wrong
  3. 3.22 × 4 =
  4. 4.₹49.40 + ₹36.75 =
  5. 5.6 × 15 =
  6. 6.62 × 4 =
  7. 7.167 − 18 =
  8. 8.416 − 47 =
  9. 9.86 + 24 + 37 + 65 =
  10. 10.147 + 27 =
  11. 11.455 − 77 =
  12. 12.78 × 5 =
  13. 13.19² =
  14. 14.Best estimate of 303 × 9? (a) 27000 (b) 270 (c) 2700 (d) 5400
  15. 15.57 + 42 + 23 + 52 =
  16. 16.51 + 20 + 29 + 69 =
  17. 17.315 + 29 =
  18. 18.16 × 14 =
  19. 19.44 × 5 =
  20. 20.88 × 50 =
  21. 21.79² =
  22. 22.300 ÷ 50 =
  23. 23.15% of 670 =
  24. 24.17 × 17 =
  25. 25.4 + 4 + 6 + 5 + 3 =
  26. 26.Best estimate of 32 × 62? (a) 1800 (b) 3600 (c) 180 (d) 18000
  27. 27.56 × 50 =
  28. 28.22 + 17 + 69 + 30 =
  29. 29.Check with nines: 19 × 68 = 1292. Correct or wrong? (a) correct (b) wrong
  30. 30.27 × 5 =
  31. 31.20 × 8 =
  32. 32.19 × 18 =
  33. 33.346 − 67 =
  34. 34.13 × 16 =
  35. 35.381 + 29 =
  36. 36.595 ÷ 5 =
  37. 37.Best estimate of 599 × 6? (a) 360 (b) 3600 (c) 36000 (d) 7200
  38. 38.85 − 19 =
  39. 39.760 ÷ 5 =
  40. 40.1200 ÷ 50 =

Answer key

  1. 330
  2. correct
  3. 88
  4. 86.15
  5. 90
  6. 248
  7. 149
  8. 369
  9. 212
  10. 174
  11. 378
  12. 390
  13. 361
  14. 2700
  15. 174
  16. 169
  17. 344
  18. 224
  19. 220
  20. 4400
  21. 6241
  22. 6
  23. 100.5
  24. 289
  25. 22
  26. 1800
  27. 2800
  28. 138
  29. correct
  30. 135
  31. 160
  32. 342
  33. 279
  34. 208
  35. 410
  36. 119
  37. 3600
  38. 66
  39. 152
  40. 24

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