Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 317 · 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. 1.101 − 18 =
2. 2.Best estimate of 88 × 82? (a) 14400 (b) 7200 (c) 72000 (d) 720
3. 3.₹89.10 − ₹3.75 =
4. 4.Check with nines: 85 × 67 = 5695. Correct or wrong? (a) correct (b) wrong
5. 5.174 + 79 =
6. 6.Check with nines: 660 + 594 = 1246. Correct or wrong? (a) correct (b) wrong
7. 7.8 + 3 + 2 + 8 + 6 =
8. 8.279 − 69 =
9. 9.42 × 5 =
10. 10.3 + 6 + 3 + 1 + 4 =
11. 11.268 − 36 =
12. 12.59 × 15 =
13. 13.14 + 61 + 69 + 25 =
14. 14.Best estimate of 32 × 88? (a) 27000 (b) 5400 (c) 270 (d) 2700
15. 15.19 × 8 =
16. 16.201 + 59 =
17. 17.45 + 17 =
18. 18.364 + 68 =
19. 19.16 × 15 =
20. 20.335 + 47 =
21. 21.Check with nines: 30 × 44 = 1325. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 688 + 664 = 1356. Correct or wrong? (a) wrong (b) correct
23. 23.127 × 4 =
24. 24.25% of 370 =
25. 25.₹71.70 − ₹15.05 =
26. 26.20 + 35 + 44 + 23 =
27. 27.415 + 89 =
28. 28.Best estimate of 898 × 3? (a) 5400 (b) 27000 (c) 2700 (d) 270
29. 29.342 + 88 =
30. 30.1200 ÷ 25 =
31. 31.539 − 37 =
32. 32.152 − 68 =
33. 33.43 × 15 =
34. 34.129 + 69 =
35. 35.Best estimate of 603 × 7? (a) 42000 (b) 4200 (c) 8400 (d) 420
36. 36.71 × 50 =
37. 37.40 × 5 =
38. 38.54 × 50 =
39. 39.12 × 15 =
40. 40.81 + 45 + 36 + 46 =

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