Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 428 · 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. 1.480 + 98 =
2. 2.₹78.35 + ₹46.30 =
3. 3.12 × 16 =
4. 4.Check with nines: 454 + 336 = 797. Correct or wrong? (a) wrong (b) correct
5. 5.13 + 33 + 18 + 59 =
6. 6.19 × 13 =
7. 7.Check with nines: 71 × 28 = 1988. Correct or wrong? (a) correct (b) wrong
8. 8.19 × 15 =
9. 9.1 + 7 + 1 + 9 + 8 =
10. 10.Best estimate of 69 × 29? (a) 210 (b) 21000 (c) 2100 (d) 4200
11. 11.12 × 14 =
12. 12.430 ÷ 5 =
13. 13.Check with nines: 293 + 943 = 1230. Correct or wrong? (a) correct (b) wrong
14. 14.800 ÷ 25 =
15. 15.₹13.15 − ₹5.60 =
16. 16.₹66.15 + ₹25.65 =
17. 17.74 + 89 + 86 + 13 =
18. 18.10% of 510 =
19. 19.322 − 19 =
20. 20.1 + 3 + 9 + 9 + 4 =
21. 21.450 ÷ 50 =
22. 22.₹42.50 + ₹31.25 =
23. 23.215 ÷ 5 =
24. 24.69 + 21 + 51 + 57 =
25. 25.Best estimate of 603 × 3? (a) 3600 (b) 18000 (c) 180 (d) 1800
26. 26.₹35.90 − ₹2.75 =
27. 27.Best estimate of 31 × 28? (a) 1800 (b) 90 (c) 9000 (d) 900
28. 28.19 × 13 =
29. 29.140 ÷ 5 =
30. 30.Best estimate of 48 × 29? (a) 15000 (b) 150 (c) 1500 (d) 3000
31. 31.28 × 15 =
32. 32.2 + 9 + 8 + 8 =
33. 33.19 × 15 =
34. 34.24 + 49 + 69 + 46 =
35. 35.Check with nines: 44 × 66 = 2904. Correct or wrong? (a) wrong (b) correct
36. 36.1100 ÷ 50 =
37. 37.Best estimate of 29 × 18? (a) 600 (b) 6000 (c) 60 (d) 1200
38. 38.275 + 99 =
39. 39.₹79.25 + ₹15.30 =
40. 40.16 × 5 =

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