Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 11 · 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. 1.196 + 47 =
2. 2.Check with nines: 744 + 483 = 1234. Correct or wrong? (a) wrong (b) correct
3. 3.15% of 840 =
4. 4.4 + 1 + 9 + 3 + 7 =
5. 5.12 × 19 =
6. 6.39² =
7. 7.79² =
8. 8.40 + 78 =
9. 9.15 × 17 =
10. 10.49² =
11. 11.420 + 78 =
12. 12.295 + 98 =
13. 13.Check with nines: 47 × 78 = 3666. Correct or wrong? (a) wrong (b) correct
14. 14.159 × 4 =
15. 15.Best estimate of 699 × 7? (a) 49000 (b) 4900 (c) 490 (d) 9800
16. 16.441 + 37 =
17. 17.1 + 2 + 3 + 9 =
18. 18.Check with nines: 691 + 232 = 916. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 93 × 58 = 5394. Correct or wrong? (a) correct (b) wrong
20. 20.64 − 48 =
21. 21.450 ÷ 50 =
22. 22.19² =
23. 23.Check with nines: 164 + 985 = 1150. Correct or wrong? (a) correct (b) wrong
24. 24.333 − 46 =
25. 25.Check with nines: 288 + 969 = 1257. Correct or wrong? (a) correct (b) wrong
26. 26.₹30.55 + ₹42.45 =
27. 27.20 + 30 + 13 + 29 =
28. 28.₹89.20 − ₹23.05 =
29. 29.Check with nines: 68 × 13 = 882. Correct or wrong? (a) wrong (b) correct
30. 30.51 × 15 =
31. 31.22 × 15 =
32. 32.14 × 13 =
33. 33.435 + 59 =
34. 34.149 × 4 =
35. 35.4 + 7 + 9 + 1 =
36. 36.₹64.25 − ₹49.75 =
37. 37.300 ÷ 5 =
38. 38.1175 ÷ 25 =
39. 39.Best estimate of 89 × 71? (a) 630 (b) 12600 (c) 63000 (d) 6300
40. 40.14 × 17 =

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