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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 248 · 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.₹23.80 − ₹9.50 =
  2. 2.92 × 5 =
  3. 3.29 + 42 + 75 + 47 =
  4. 4.264 − 68 =
  5. 5.2000 ÷ 50 =
  6. 6.31² =
  7. 7.45 × 50 =
  8. 8.Best estimate of 72 × 29? (a) 21000 (b) 2100 (c) 210 (d) 4200
  9. 9.4 × 15 =
  10. 10.220 + 48 =
  11. 11.Check with nines: 79 × 41 = 3240. Correct or wrong? (a) correct (b) wrong
  12. 12.3 + 8 + 7 + 2 + 8 =
  13. 13.18 × 15 =
  14. 14.274 − 18 =
  15. 15.60 × 5 =
  16. 16.1550 ÷ 50 =
  17. 17.73 × 50 =
  18. 18.7 + 6 + 4 + 4 =
  19. 19.59² =
  20. 20.Best estimate of 797 × 6? (a) 48000 (b) 480 (c) 4800 (d) 9600
  21. 21.62 + 71 + 77 + 25 =
  22. 22.153 − 47 =
  23. 23.50% of 490 =
  24. 24.8 + 2 + 1 + 2 =
  25. 25.386 + 49 =
  26. 26.54 × 50 =
  27. 27.20% of 280 =
  28. 28.82 × 5 =
  29. 29.13 × 15 =
  30. 30.22 + 88 + 54 + 26 =
  31. 31.231 − 88 =
  32. 32.5% of 660 =
  33. 33.Check with nines: 75 × 52 = 3900. Correct or wrong? (a) wrong (b) correct
  34. 34.497 − 17 =
  35. 35.61² =
  36. 36.78 × 50 =
  37. 37.397 + 57 =
  38. 38.Best estimate of 703 × 7? (a) 9800 (b) 4900 (c) 49000 (d) 490
  39. 39.4 + 8 + 4 + 2 + 2 =
  40. 40.925 ÷ 25 =

Answer key

  1. 14.3
  2. 460
  3. 193
  4. 196
  5. 40
  6. 961
  7. 2250
  8. 2100
  9. 60
  10. 268
  11. wrong
  12. 28
  13. 270
  14. 256
  15. 300
  16. 31
  17. 3650
  18. 21
  19. 3481
  20. 4800
  21. 235
  22. 106
  23. 245
  24. 13
  25. 435
  26. 2700
  27. 56
  28. 410
  29. 195
  30. 190
  31. 143
  32. 33
  33. correct
  34. 480
  35. 3721
  36. 3900
  37. 454
  38. 4900
  39. 20
  40. 37

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