Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 701 · 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.Best estimate of 98 × 9? (a) 9000 (b) 90 (c) 1800 (d) 900
2. 2.10 × 15 =
3. 3.20% of 450 =
4. 4.6 + 4 + 9 + 4 + 6 =
5. 5.51² =
6. 6.51² =
7. 7.34 × 5 =
8. 8.₹24.55 − ₹22.30 =
9. 9.54 × 5 =
10. 10.Check with nines: 696 + 961 = 1657. Correct or wrong? (a) wrong (b) correct
11. 11.Best estimate of 72 × 88? (a) 12600 (b) 63000 (c) 630 (d) 6300
12. 12.18 × 16 =
13. 13.1150 ÷ 25 =
14. 14.524 − 96 =
15. 15.86 + 34 + 56 + 22 =
16. 16.18 × 19 =
17. 17.46 × 15 =
18. 18.317 + 67 =
19. 19.5% of 230 =
20. 20.39² =
21. 21.35 × 8 =
22. 22.5 + 2 + 5 + 5 + 5 =
23. 23.15% of 640 =
24. 24.Check with nines: 620 + 371 = 991. Correct or wrong? (a) correct (b) wrong
25. 25.Best estimate of 38 × 89? (a) 3600 (b) 36000 (c) 7200 (d) 360
26. 26.45 × 50 =
27. 27.59² =
28. 28.₹20.75 − ₹10.35 =
29. 29.Best estimate of 701 × 5? (a) 7000 (b) 35000 (c) 3500 (d) 350
30. 30.89² =
31. 31.Best estimate of 82 × 51? (a) 8000 (b) 4000 (c) 40000 (d) 400
32. 32.Check with nines: 76 × 32 = 2432. Correct or wrong? (a) wrong (b) correct
33. 33.1 + 7 + 3 + 8 + 7 =
34. 34.50% of 180 =
35. 35.338 + 88 =
36. 36.7 + 3 + 9 + 1 + 4 =
37. 37.76 − 28 =
38. 38.41 × 5 =
39. 39.Best estimate of 897 × 6? (a) 54000 (b) 540 (c) 5400 (d) 10800
40. 40.21 × 15 =

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