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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 739 · 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: 962 + 721 = 1683. Correct or wrong? (a) wrong (b) correct
  2. 2.2 + 2 + 9 + 7 + 8 =
  3. 3.1175 ÷ 25 =
  4. 4.56 × 15 =
  5. 5.38 × 8 =
  6. 6.80 × 50 =
  7. 7.31² =
  8. 8.497 + 57 =
  9. 9.422 − 86 =
  10. 10.29² =
  11. 11.₹62.75 + ₹12.15 =
  12. 12.5 + 1 + 4 + 1 + 5 =
  13. 13.Best estimate of 22 × 31? (a) 600 (b) 60 (c) 1200 (d) 6000
  14. 14.25 × 15 =
  15. 15.43 × 15 =
  16. 16.1475 ÷ 25 =
  17. 17.Check with nines: 630 + 304 = 935. Correct or wrong? (a) wrong (b) correct
  18. 18.116 × 4 =
  19. 19.405 − 89 =
  20. 20.93 × 50 =
  21. 21.8 + 2 + 2 + 7 =
  22. 22.246 + 98 =
  23. 23.566 − 16 =
  24. 24.50 × 50 =
  25. 25.13 + 26 + 45 + 63 =
  26. 26.41² =
  27. 27.₹22.10 − ₹21.35 =
  28. 28.4 + 8 + 6 + 1 =
  29. 29.16 + 85 + 26 + 11 =
  30. 30.Check with nines: 305 + 901 = 1206. Correct or wrong? (a) correct (b) wrong
  31. 31.325 ÷ 25 =
  32. 32.445 ÷ 5 =
  33. 33.11 × 16 =
  34. 34.19² =
  35. 35.35 × 15 =
  36. 36.₹40.70 − ₹4.35 =
  37. 37.5% of 650 =
  38. 38.45 × 8 =
  39. 39.47 × 5 =
  40. 40.₹41.50 − ₹19.70 =

Answer key

  1. correct
  2. 28
  3. 47
  4. 840
  5. 304
  6. 4000
  7. 961
  8. 554
  9. 336
  10. 841
  11. 74.9
  12. 16
  13. 600
  14. 375
  15. 645
  16. 59
  17. wrong
  18. 464
  19. 316
  20. 4650
  21. 19
  22. 344
  23. 550
  24. 2500
  25. 147
  26. 1681
  27. 0.75
  28. 19
  29. 138
  30. correct
  31. 13
  32. 89
  33. 176
  34. 361
  35. 525
  36. 36.35
  37. 32.5
  38. 360
  39. 235
  40. 21.8

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