Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 461 · 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 × 12 =
2. 2.492 − 96 =
3. 3.10% of 340 =
4. 4.467 − 98 =
5. 5.₹45.90 + ₹37.50 =
6. 6.Check with nines: 52 × 50 = 2600. Correct or wrong? (a) correct (b) wrong
7. 7.₹33.50 − ₹5.05 =
8. 8.154 × 4 =
9. 9.135 + 79 =
10. 10.29 + 43 + 14 + 81 =
11. 11.Best estimate of 903 × 6? (a) 54000 (b) 540 (c) 5400 (d) 10800
12. 12.29² =
13. 13.15 + 37 + 68 + 60 =
14. 14.26 × 50 =
15. 15.Best estimate of 88 × 51? (a) 4500 (b) 450 (c) 45000 (d) 9000
16. 16.Best estimate of 51 × 29? (a) 150 (b) 3000 (c) 1500 (d) 15000
17. 17.85 × 4 =
18. 18.23 + 15 + 84 + 73 =
19. 19.89² =
20. 20.36 + 79 + 48 + 75 =
21. 21.303 − 96 =
22. 22.355 ÷ 5 =
23. 23.₹55.10 + ₹22.55 =
24. 24.5% of 430 =
25. 25.Check with nines: 647 + 308 = 952. Correct or wrong? (a) correct (b) wrong
26. 26.39² =
27. 27.Best estimate of 68 × 18? (a) 2800 (b) 1400 (c) 14000 (d) 140
28. 28.Check with nines: 759 + 309 = 1068. Correct or wrong? (a) correct (b) wrong
29. 29.Best estimate of 603 × 6? (a) 36000 (b) 7200 (c) 3600 (d) 360
30. 30.5% of 630 =
31. 31.426 + 97 =
32. 32.Best estimate of 597 × 4? (a) 4800 (b) 240 (c) 24000 (d) 2400
33. 33.Best estimate of 32 × 19? (a) 60 (b) 600 (c) 1200 (d) 6000
34. 34.468 + 28 =
35. 35.19 × 11 =
36. 36.Best estimate of 59 × 72? (a) 420 (b) 8400 (c) 42000 (d) 4200
37. 37.3 + 8 + 9 + 1 + 2 =
38. 38.112 × 4 =
39. 39.₹94.10 − ₹26.45 =
40. 40.Check with nines: 37 × 12 = 436. Correct or wrong? (a) wrong (b) correct

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