Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 813 · 40 questions

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.

1. 1.₹19.10 + ₹14.70 =
2. 2.21 × 15 =
3. 3.80 × 50 =
4. 4.Check with nines: 213 + 123 = 341. Correct or wrong? (a) correct (b) wrong
5. 5.264 + 87 =
6. 6.71² =
7. 7.Best estimate of 39 × 78? (a) 32000 (b) 320 (c) 3200 (d) 6400
8. 8.71² =
9. 9.147 + 29 =
10. 10.298 − 58 =
11. 11.Check with nines: 44 × 39 = 1716. Correct or wrong? (a) wrong (b) correct
12. 12.650 ÷ 50 =
13. 13.₹95.05 + ₹9.75 =
14. 14.526 − 77 =
15. 15.11 × 11 =
16. 16.Check with nines: 64 × 91 = 5829. Correct or wrong? (a) wrong (b) correct
17. 17.13 × 18 =
18. 18.2 + 2 + 6 + 4 + 6 =
19. 19.15% of 670 =
20. 20.78 + 34 + 55 + 21 =
21. 21.Best estimate of 42 × 92? (a) 360 (b) 3600 (c) 36000 (d) 7200
22. 22.49² =
23. 23.61² =
24. 24.30 × 50 =
25. 25.36 × 15 =
26. 26.188 − 28 =
27. 27.340 ÷ 5 =
28. 28.13 × 18 =
29. 29.19 × 13 =
30. 30.75 − 26 =
31. 31.Best estimate of 298 × 8? (a) 24000 (b) 240 (c) 2400 (d) 4800
32. 32.Best estimate of 89 × 91? (a) 8100 (b) 810 (c) 16200 (d) 81000
33. 33.492 − 47 =
34. 34.₹33.25 − ₹2.95 =
35. 35.13 × 12 =
36. 36.69² =
37. 37.101 + 69 =
38. 38.7 + 2 + 3 + 7 =
39. 39.409 + 79 =
40. 40.7 + 5 + 4 + 3 =

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths