Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 837 · 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. 1.72 + 49 + 12 + 64 =
2. 2.50% of 740 =
3. 3.Best estimate of 98 × 9? (a) 90 (b) 1800 (c) 9000 (d) 900
4. 4.69² =
5. 5.Best estimate of 28 × 29? (a) 900 (b) 90 (c) 9000 (d) 1800
6. 6.155 − 58 =
7. 7.31² =
8. 8.27 + 36 + 34 + 47 =
9. 9.₹17.05 + ₹7.20 =
10. 10.₹46.90 − ₹46.65 =
11. 11.24 × 4 =
12. 12.13 × 16 =
13. 13.12 × 19 =
14. 14.21² =
15. 15.5 + 1 + 1 + 5 =
16. 16.40 × 5 =
17. 17.74 + 19 + 26 + 18 =
18. 18.19 × 14 =
19. 19.142 + 69 =
20. 20.₹23.55 + ₹15.30 =
21. 21.₹71.10 − ₹24.20 =
22. 22.441 − 46 =
23. 23.Check with nines: 46 × 37 = 1702. Correct or wrong? (a) correct (b) wrong
24. 24.4 + 4 + 6 + 6 =
25. 25.7 × 15 =
26. 26.Best estimate of 29 × 89? (a) 2700 (b) 270 (c) 5400 (d) 27000
27. 27.397 + 48 =
28. 28.₹24.25 + ₹10.75 =
29. 29.19 × 15 =
30. 30.Check with nines: 765 + 153 = 918. Correct or wrong? (a) wrong (b) correct
31. 31.7 + 5 + 3 + 5 =
32. 32.19 × 12 =
33. 33.190 ÷ 5 =
34. 34.549 − 37 =
35. 35.212 + 17 =
36. 36.36 × 5 =
37. 37.Check with nines: 18 × 21 = 378. Correct or wrong? (a) wrong (b) correct
38. 38.9 + 7 + 4 + 1 =
39. 39.49 × 15 =
40. 40.378 + 48 =

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