Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 349 · 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. 1.8 + 3 + 5 + 4 + 5 =
2. 2.38 + 42 + 77 + 61 =
3. 3.Best estimate of 61 × 79? (a) 9600 (b) 48000 (c) 480 (d) 4800
4. 4.2 + 2 + 6 + 9 + 1 =
5. 5.92 × 50 =
6. 6.6 + 1 + 9 + 2 =
7. 7.82 × 50 =
8. 8.78 + 20 + 45 + 45 =
9. 9.11 × 16 =
10. 10.Check with nines: 18 × 77 = 1386. Correct or wrong? (a) wrong (b) correct
11. 11.19 × 12 =
12. 12.567 − 28 =
13. 13.91² =
14. 14.Best estimate of 101 × 5? (a) 5000 (b) 50 (c) 1000 (d) 500
15. 15.1250 ÷ 50 =
16. 16.18 × 5 =
17. 17.329 + 99 =
18. 18.Check with nines: 718 + 481 = 1199. Correct or wrong? (a) wrong (b) correct
19. 19.5 + 8 + 3 + 5 =
20. 20.Best estimate of 59 × 68? (a) 8400 (b) 4200 (c) 42000 (d) 420
21. 21.7 + 9 + 7 + 1 =
22. 22.15% of 80 =
23. 23.78 + 26 + 66 + 55 =
24. 24.Best estimate of 897 × 3? (a) 5400 (b) 270 (c) 2700 (d) 27000
25. 25.Best estimate of 29 × 48? (a) 15000 (b) 150 (c) 3000 (d) 1500
26. 26.Best estimate of 897 × 3? (a) 5400 (b) 270 (c) 2700 (d) 27000
27. 27.46 + 36 + 79 + 71 =
28. 28.Best estimate of 41 × 19? (a) 8000 (b) 800 (c) 1600 (d) 80
29. 29.442 − 68 =
30. 30.6 + 6 + 9 + 2 + 1 =
31. 31.8 + 5 + 7 + 8 + 2 =
32. 32.Best estimate of 897 × 6? (a) 54000 (b) 10800 (c) 540 (d) 5400
33. 33.50% of 310 =
34. 34.600 ÷ 50 =
35. 35.230 ÷ 5 =
36. 36.₹43.15 + ₹10.30 =
37. 37.91² =
38. 38.71 + 47 + 38 + 27 =
39. 39.15 × 15 =
40. 40.48 × 4 =

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