Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 181 · 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.Check with nines: 15 × 16 = 246. Correct or wrong? (a) wrong (b) correct
2. 2.116 × 4 =
3. 3.Best estimate of 703 × 9? (a) 63000 (b) 630 (c) 6300 (d) 12600
4. 4.1% of 760 =
5. 5.61² =
6. 6.34 + 51 + 54 + 18 =
7. 7.Check with nines: 59 × 14 = 826. Correct or wrong? (a) wrong (b) correct
8. 8.1350 ÷ 50 =
9. 9.₹13.55 + ₹6.50 =
10. 10.Check with nines: 997 + 891 = 1888. Correct or wrong? (a) wrong (b) correct
11. 11.10% of 460 =
12. 12.₹44.10 − ₹11.30 =
13. 13.Best estimate of 498 × 8? (a) 400 (b) 40000 (c) 8000 (d) 4000
14. 14.82 + 89 + 47 + 55 =
15. 15.Check with nines: 642 + 173 = 817. Correct or wrong? (a) correct (b) wrong
16. 16.145 ÷ 5 =
17. 17.58 + 59 + 71 + 18 =
18. 18.43 × 4 =
19. 19.₹29.15 − ₹25.45 =
20. 20.Check with nines: 64 × 59 = 3771. Correct or wrong? (a) correct (b) wrong
21. 21.9 + 1 + 6 + 2 =
22. 22.273 + 18 =
23. 23.373 − 96 =
24. 24.186 − 57 =
25. 25.Best estimate of 89 × 81? (a) 72000 (b) 7200 (c) 720 (d) 14400
26. 26.5% of 830 =
27. 27.₹65.30 + ₹13.80 =
28. 28.21 × 15 =
29. 29.₹75.95 − ₹32.55 =
30. 30.10% of 500 =
31. 31.317 − 18 =
32. 32.44 × 15 =
33. 33.465 ÷ 5 =
34. 34.5 + 6 + 5 + 4 + 4 =
35. 35.57 × 4 =
36. 36.Check with nines: 69 × 65 = 4485. Correct or wrong? (a) wrong (b) correct
37. 37.276 + 39 =
38. 38.14 × 12 =
39. 39.135 + 77 =
40. 40.Best estimate of 21 × 71? (a) 14000 (b) 140 (c) 2800 (d) 1400

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