Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 903 · 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: 945 + 977 = 1922. Correct or wrong? (a) wrong (b) correct
2. 2.32 × 15 =
3. 3.15% of 610 =
4. 4.350 ÷ 50 =
5. 5.13 × 18 =
6. 6.53 + 69 =
7. 7.28 × 50 =
8. 8.Best estimate of 28 × 78? (a) 24000 (b) 4800 (c) 2400 (d) 240
9. 9.41² =
10. 10.350 ÷ 25 =
11. 11.155 − 37 =
12. 12.875 ÷ 25 =
13. 13.Check with nines: 42 × 55 = 2317. Correct or wrong? (a) correct (b) wrong
14. 14.12 × 15 =
15. 15.4 × 15 =
16. 16.65 ÷ 5 =
17. 17.19 × 8 =
18. 18.75 × 50 =
19. 19.29² =
20. 20.₹56.20 + ₹40.90 =
21. 21.Best estimate of 81 × 31? (a) 240 (b) 2400 (c) 4800 (d) 24000
22. 22.32 × 5 =
23. 23.1225 ÷ 25 =
24. 24.69 × 5 =
25. 25.21 × 5 =
26. 26.Check with nines: 654 + 502 = 1156. Correct or wrong? (a) correct (b) wrong
27. 27.440 + 29 =
28. 28.113 − 47 =
29. 29.925 ÷ 25 =
30. 30.Best estimate of 38 × 49? (a) 2000 (b) 20000 (c) 4000 (d) 200
31. 31.71² =
32. 32.11 × 13 =
33. 33.9 × 15 =
34. 34.494 − 48 =
35. 35.328 − 69 =
36. 36.9 + 1 + 4 + 2 =
37. 37.85 + 72 + 73 + 76 =
38. 38.362 − 67 =
39. 39.8 + 9 + 9 + 2 =
40. 40.4 + 5 + 5 + 5 + 6 =

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