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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 507 · 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. 1.162 + 79 =
  2. 2.21 × 8 =
  3. 3.99 + 58 =
  4. 4.₹5.80 + ₹39.05 =
  5. 5.₹27.60 − ₹22.40 =
  6. 6.Check with nines: 263 + 783 = 1046. Correct or wrong? (a) correct (b) wrong
  7. 7.32 + 85 + 84 + 51 =
  8. 8.3 + 5 + 7 + 7 =
  9. 9.₹34.75 − ₹17.05 =
  10. 10.79² =
  11. 11.Best estimate of 697 × 6? (a) 42000 (b) 8400 (c) 420 (d) 4200
  12. 12.15 × 19 =
  13. 13.7 + 1 + 8 + 2 + 8 =
  14. 14.190 ÷ 5 =
  15. 15.12 + 89 + 85 + 15 =
  16. 16.69² =
  17. 17.40 × 8 =
  18. 18.79² =
  19. 19.59 + 79 =
  20. 20.19 × 18 =
  21. 21.135 × 4 =
  22. 22.₹22.35 + ₹16.40 =
  23. 23.4 + 1 + 9 + 1 + 7 =
  24. 24.23 × 8 =
  25. 25.Best estimate of 29 × 39? (a) 1200 (b) 120 (c) 2400 (d) 12000
  26. 26.98 × 50 =
  27. 27.50% of 200 =
  28. 28.7 + 3 + 4 + 5 =
  29. 29.1 + 9 + 4 + 9 + 8 =
  30. 30.39² =
  31. 31.Best estimate of 302 × 9? (a) 270 (b) 2700 (c) 27000 (d) 5400
  32. 32.89² =
  33. 33.62 × 8 =
  34. 34.144 + 77 =
  35. 35.2 + 3 + 8 + 8 =
  36. 36.41² =
  37. 37.71² =
  38. 38.39 × 4 =
  39. 39.42 × 15 =
  40. 40.21 + 26 + 13 + 17 =

Answer key

  1. 241
  2. 168
  3. 157
  4. 44.85
  5. 5.2
  6. correct
  7. 252
  8. 22
  9. 17.7
  10. 6241
  11. 4200
  12. 285
  13. 26
  14. 38
  15. 201
  16. 4761
  17. 320
  18. 6241
  19. 138
  20. 342
  21. 540
  22. 38.75
  23. 22
  24. 184
  25. 1200
  26. 4900
  27. 100
  28. 19
  29. 31
  30. 1521
  31. 2700
  32. 7921
  33. 496
  34. 221
  35. 21
  36. 1681
  37. 5041
  38. 156
  39. 630
  40. 77

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