Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 421 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.What is the remainder when 119 is divided by 9?
2. 2.315 ÷ 7 =
3. 3.525 − 99 =
4. 4.208 ÷ 8 =
5. 5.1024 − 998 =
6. 6.A cricket match starts at 3:05 and the first innings ends at 6:20. How many minutes did the innings last?
7. 7.2 + ? = 10
8. 8.You start your homework at 2:50 and finish at 6:10. How many minutes did you work?
9. 9.14² =
10. 10.Half of 48 =
11. 11.10% of ₹420 =
12. 12.54 + 56 =
13. 13.64 × 4 =
14. 14.Best estimate of 20 × 31? (a) 600 (b) 6000 (c) 60
15. 15.66 × 4 =
16. 16.You buy a bag of mangoes for ₹269 and pay with a ₹500 note. How much change do you get, in rupees?
17. 17.71 × 4 =
18. 18.10% of ₹650 =
19. 19.Best estimate of 80 × 87? (a) 72000 (b) 7200 (c) 720
20. 20.254 − 99 =
21. 21.35 + ? = 100
22. 22.25% of ₹450 =
23. 23.7 + 9 =
24. 24.You buy a kite for ₹234 and pay with a ₹500 note. How much change do you get, in rupees?
25. 25.26 + 88 =
26. 26.507 − 493 =
27. 27.82 + 12 =
28. 28.792 ÷ 9 =
29. 29.56 + 6 =
30. 30.65 − 39 =
31. 31.67 + 5 =
32. 32.28 + 30 =
33. 33.34 × 8 =
34. 34.52 × 4 =
35. 35.120 ÷ 8 =
36. 36.What is the remainder when 59 is divided by 5?
37. 37.1 + ? = 10
38. 38.A film starts at 1:30 and ends at 4:10. How many minutes long is the film?
39. 39.68 + 9 =
40. 40.84 + 69 =

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