Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 965 · 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. 1.16 × 13 =
2. 2.81² =
3. 3.₹24.70 + ₹16.60 =
4. 4.182 − 29 =
5. 5.20% of 140 =
6. 6.580 − 76 =
7. 7.12 × 12 =
8. 8.459 + 17 =
9. 9.51² =
10. 10.77 × 5 =
11. 11.Best estimate of 903 × 4? (a) 7200 (b) 3600 (c) 36000 (d) 360
12. 12.₹57.30 − ₹11.65 =
13. 13.69² =
14. 14.₹58.05 + ₹8.95 =
15. 15.36 × 15 =
16. 16.13 × 15 =
17. 17.488 + 99 =
18. 18.Check with nines: 994 + 170 = 1161. Correct or wrong? (a) wrong (b) correct
19. 19.71² =
20. 20.1200 ÷ 25 =
21. 21.Best estimate of 19 × 18? (a) 400 (b) 40 (c) 800 (d) 4000
22. 22.7 + 5 + 2 + 1 + 8 =
23. 23.11 × 16 =
24. 24.20% of 740 =
25. 25.39² =
26. 26.503 − 67 =
27. 27.Check with nines: 18 × 44 = 796. Correct or wrong? (a) wrong (b) correct
28. 28.16 × 15 =
29. 29.Check with nines: 17 × 91 = 1549. Correct or wrong? (a) wrong (b) correct
30. 30.Best estimate of 199 × 9? (a) 180 (b) 1800 (c) 18000 (d) 3600
31. 31.18 × 12 =
32. 32.700 ÷ 25 =
33. 33.17 × 50 =
34. 34.Best estimate of 18 × 62? (a) 1200 (b) 2400 (c) 120 (d) 12000
35. 35.18 + 25 + 82 + 28 =
36. 36.518 − 88 =
37. 37.Check with nines: 376 + 332 = 708. Correct or wrong? (a) correct (b) wrong
38. 38.71 × 5 =
39. 39.39 × 5 =
40. 40.1275 ÷ 25 =

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