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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 329 · 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: 92 × 23 = 2116. Correct or wrong? (a) wrong (b) correct
  2. 2.₹23.75 + ₹6.15 =
  3. 3.463 + 19 =
  4. 4.33 × 5 =
  5. 5.14 × 13 =
  6. 6.1150 ÷ 50 =
  7. 7.15 × 17 =
  8. 8.454 + 27 =
  9. 9.59 × 4 =
  10. 10.53 + 75 + 73 + 83 =
  11. 11.570 ÷ 5 =
  12. 12.69 + 35 + 71 + 19 =
  13. 13.4 + 1 + 9 + 5 + 2 =
  14. 14.₹74.30 + ₹17.05 =
  15. 15.Best estimate of 89 × 92? (a) 16200 (b) 81000 (c) 810 (d) 8100
  16. 16.11 × 19 =
  17. 17.₹73.60 − ₹2.90 =
  18. 18.36 × 15 =
  19. 19.₹80.05 + ₹39.05 =
  20. 20.20% of 670 =
  21. 21.300 ÷ 50 =
  22. 22.59 + 18 + 85 + 17 =
  23. 23.12 × 19 =
  24. 24.15 + 38 + 30 + 35 =
  25. 25.16 × 14 =
  26. 26.110 + 89 =
  27. 27.370 ÷ 5 =
  28. 28.12 × 5 =
  29. 29.15 × 17 =
  30. 30.298 + 99 =
  31. 31.58 × 5 =
  32. 32.261 − 66 =
  33. 33.47 × 4 =
  34. 34.Check with nines: 893 + 705 = 1597. Correct or wrong? (a) correct (b) wrong
  35. 35.136 + 18 =
  36. 36.473 − 26 =
  37. 37.3 + 7 + 3 + 2 =
  38. 38.Check with nines: 50 × 43 = 2152. Correct or wrong? (a) correct (b) wrong
  39. 39.485 ÷ 5 =
  40. 40.21² =

Answer key

  1. correct
  2. 29.9
  3. 482
  4. 165
  5. 182
  6. 23
  7. 255
  8. 481
  9. 236
  10. 284
  11. 114
  12. 194
  13. 21
  14. 91.35
  15. 8100
  16. 209
  17. 70.7
  18. 540
  19. 119.1
  20. 134
  21. 6
  22. 179
  23. 228
  24. 118
  25. 224
  26. 199
  27. 74
  28. 60
  29. 255
  30. 397
  31. 290
  32. 195
  33. 188
  34. wrong
  35. 154
  36. 447
  37. 15
  38. wrong
  39. 97
  40. 441

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