Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 998 · 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. 1.29² =
2. 2.9 + 7 + 3 + 2 =
3. 3.275 ÷ 25 =
4. 4.88 × 50 =
5. 5.83 + 66 + 40 + 42 =
6. 6.40 + 34 + 33 + 38 =
7. 7.5% of 30 =
8. 8.58 + 57 =
9. 9.168 − 86 =
10. 10.43 × 8 =
11. 11.805 ÷ 5 =
12. 12.63 + 74 + 75 + 16 =
13. 13.₹48.50 − ₹30.35 =
14. 14.₹97.50 + ₹6.75 =
15. 15.15 × 15 =
16. 16.₹8.05 + ₹15.20 =
17. 17.Check with nines: 708 + 862 = 1570. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 436 + 954 = 1395. Correct or wrong? (a) correct (b) wrong
19. 19.₹73.10 + ₹49.30 =
20. 20.5 + 2 + 1 + 3 + 9 =
21. 21.11 × 11 =
22. 22.7 × 15 =
23. 23.25% of 380 =
24. 24.₹44.10 − ₹27.35 =
25. 25.Best estimate of 89 × 92? (a) 16200 (b) 8100 (c) 81000 (d) 810
26. 26.189 + 99 =
27. 27.5% of 800 =
28. 28.Check with nines: 26 × 36 = 936. Correct or wrong? (a) correct (b) wrong
29. 29.275 − 29 =
30. 30.39² =
31. 31.₹82.25 + ₹31.25 =
32. 32.Check with nines: 60 × 24 = 1439. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 703 + 868 = 1571. Correct or wrong? (a) correct (b) wrong
34. 34.512 − 76 =
35. 35.62 + 18 + 27 + 31 =
36. 36.Best estimate of 91 × 49? (a) 45000 (b) 9000 (c) 4500 (d) 450
37. 37.63 × 15 =
38. 38.264 − 26 =
39. 39.22 × 15 =
40. 40.86 − 56 =

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