Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 231 · 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. 1.47 + 33 + 18 + 54 =
2. 2.₹77.60 + ₹29.25 =
3. 3.₹54.15 + ₹16.70 =
4. 4.Check with nines: 97 × 72 = 6979. Correct or wrong? (a) wrong (b) correct
5. 5.44 + 39 + 34 + 49 =
6. 6.Best estimate of 59 × 91? (a) 54000 (b) 10800 (c) 540 (d) 5400
7. 7.1200 ÷ 50 =
8. 8.57 + 67 =
9. 9.5 + 8 + 6 + 2 + 8 =
10. 10.19² =
11. 11.226 + 97 =
12. 12.Best estimate of 19 × 41? (a) 1600 (b) 8000 (c) 80 (d) 800
13. 13.5 + 9 + 8 + 1 =
14. 14.8 + 7 + 5 + 5 + 5 =
15. 15.335 − 38 =
16. 16.71² =
17. 17.9 + 3 + 1 + 3 =
18. 18.49 × 5 =
19. 19.75 × 4 =
20. 20.349 − 28 =
21. 21.75 × 5 =
22. 22.286 − 28 =
23. 23.58 + 86 + 71 + 30 =
24. 24.35 + 37 + 32 + 52 =
25. 25.Check with nines: 195 + 363 = 558. Correct or wrong? (a) correct (b) wrong
26. 26.58 × 5 =
27. 27.10% of 180 =
28. 28.1300 ÷ 50 =
29. 29.25 × 5 =
30. 30.374 + 39 =
31. 31.92 × 50 =
32. 32.₹58.95 + ₹20.40 =
33. 33.5 × 15 =
34. 34.Check with nines: 670 + 923 = 1588. Correct or wrong? (a) wrong (b) correct
35. 35.42 + 12 + 46 + 82 =
36. 36.461 − 46 =
37. 37.278 + 17 =
38. 38.14 × 11 =
39. 39.1300 ÷ 25 =
40. 40.Best estimate of 97 × 6? (a) 6000 (b) 60 (c) 1200 (d) 600

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