Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 754 · 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: 250 + 323 = 572. Correct or wrong? (a) correct (b) wrong
2. 2.60 × 15 =
3. 3.11 × 14 =
4. 4.18 × 13 =
5. 5.Best estimate of 62 × 52? (a) 30000 (b) 300 (c) 6000 (d) 3000
6. 6.454 + 28 =
7. 7.Best estimate of 21 × 41? (a) 80 (b) 1600 (c) 8000 (d) 800
8. 8.19 × 15 =
9. 9.₹30.85 + ₹23.25 =
10. 10.109 × 4 =
11. 11.1 + 2 + 3 + 9 + 9 =
12. 12.539 − 77 =
13. 13.Check with nines: 921 + 877 = 1798. Correct or wrong? (a) wrong (b) correct
14. 14.₹81.05 − ₹9.20 =
15. 15.Check with nines: 867 + 995 = 1865. Correct or wrong? (a) wrong (b) correct
16. 16.12 × 11 =
17. 17.143 × 4 =
18. 18.16 × 15 =
19. 19.Best estimate of 18 × 51? (a) 2000 (b) 10000 (c) 100 (d) 1000
20. 20.6 + 3 + 6 + 6 + 7 =
21. 21.35 + 34 + 16 + 67 =
22. 22.5% of 440 =
23. 23.58 × 5 =
24. 24.1025 ÷ 25 =
25. 25.Check with nines: 350 + 328 = 682. Correct or wrong? (a) correct (b) wrong
26. 26.81² =
27. 27.₹30.20 + ₹25.05 =
28. 28.Check with nines: 33 × 38 = 1254. Correct or wrong? (a) wrong (b) correct
29. 29.51 × 4 =
30. 30.83 + 42 + 53 + 18 =
31. 31.Check with nines: 497 + 727 = 1224. Correct or wrong? (a) wrong (b) correct
32. 32.96 + 57 =
33. 33.447 − 56 =
34. 34.29 + 87 =
35. 35.Check with nines: 68 × 64 = 4352. Correct or wrong? (a) wrong (b) correct
36. 36.15% of 300 =
37. 37.1050 ÷ 25 =
38. 38.271 + 27 =
39. 39.725 ÷ 25 =
40. 40.31² =

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