Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 839 · 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. 1.512 − 56 =
2. 2.Check with nines: 88 × 34 = 2992. Correct or wrong? (a) correct (b) wrong
3. 3.527 − 98 =
4. 4.197 − 98 =
5. 5.18 + 32 + 32 + 55 =
6. 6.8 + 9 + 6 + 1 =
7. 7.Best estimate of 501 × 6? (a) 3000 (b) 6000 (c) 30000 (d) 300
8. 8.64 × 50 =
9. 9.61² =
10. 10.165 + 48 =
11. 11.20% of 430 =
12. 12.12 × 15 =
13. 13.27 + 88 + 74 + 13 =
14. 14.Best estimate of 898 × 7? (a) 630 (b) 63000 (c) 12600 (d) 6300
15. 15.Check with nines: 135 + 216 = 351. Correct or wrong? (a) wrong (b) correct
16. 16.15% of 230 =
17. 17.Best estimate of 92 × 31? (a) 27000 (b) 270 (c) 2700 (d) 5400
18. 18.28 × 4 =
19. 19.Check with nines: 559 + 566 = 1125. Correct or wrong? (a) correct (b) wrong
20. 20.₹51.80 + ₹25.85 =
21. 21.464 − 89 =
22. 22.21 + 31 + 50 + 53 =
23. 23.37 × 5 =
24. 24.Check with nines: 21 × 19 = 391. Correct or wrong? (a) correct (b) wrong
25. 25.19 × 5 =
26. 26.73 + 43 + 46 + 47 =
27. 27.29² =
28. 28.16 × 19 =
29. 29.59 × 8 =
30. 30.232 + 57 =
31. 31.25 × 50 =
32. 32.50% of 680 =
33. 33.Check with nines: 964 + 401 = 1365. Correct or wrong? (a) wrong (b) correct
34. 34.35 × 4 =
35. 35.2 + 1 + 2 + 4 + 9 =
36. 36.Best estimate of 297 × 9? (a) 270 (b) 5400 (c) 2700 (d) 27000
37. 37.57 × 15 =
38. 38.337 + 79 =
39. 39.12 × 18 =
40. 40.491 − 47 =

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