Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 669 · 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. 1.12 × 11 =
2. 2.5 + 1 + 9 + 9 + 9 =
3. 3.18 × 50 =
4. 4.₹59.90 + ₹47.25 =
5. 5.14 × 19 =
6. 6.₹37.05 − ₹13.05 =
7. 7.₹31.75 + ₹49.70 =
8. 8.1125 ÷ 25 =
9. 9.₹58.20 − ₹4.65 =
10. 10.38 × 50 =
11. 11.59 × 5 =
12. 12.77 + 34 + 30 + 79 =
13. 13.14 × 11 =
14. 14.14 × 18 =
15. 15.91² =
16. 16.Best estimate of 89 × 71? (a) 630 (b) 12600 (c) 6300 (d) 63000
17. 17.27 × 15 =
18. 18.₹11.10 + ₹41.60 =
19. 19.79² =
20. 20.60 × 15 =
21. 21.Best estimate of 38 × 21? (a) 80 (b) 8000 (c) 800 (d) 1600
22. 22.59² =
23. 23.Best estimate of 199 × 6? (a) 120 (b) 1200 (c) 2400 (d) 12000
24. 24.18 + 32 + 13 + 31 =
25. 25.148 + 37 =
26. 26.15 + 17 + 30 + 32 =
27. 27.146 × 4 =
28. 28.20% of 280 =
29. 29.Best estimate of 31 × 68? (a) 210 (b) 4200 (c) 2100 (d) 21000
30. 30.₹55.95 + ₹19.25 =
31. 31.41² =
32. 32.1% of 840 =
33. 33.₹29.25 + ₹47.75 =
34. 34.592 − 68 =
35. 35.Best estimate of 52 × 72? (a) 7000 (b) 350 (c) 3500 (d) 35000
36. 36.5% of 80 =
37. 37.17 × 18 =
38. 38.7 × 15 =
39. 39.Check with nines: 593 + 218 = 811. Correct or wrong? (a) wrong (b) correct
40. 40.23 × 5 =

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