Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 813 · 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. 1.55 + 69 =
2. 2.95 − 12 =
3. 3.39 laddoos are packed in boxes of 4. How many laddoos are left over?
4. 4.10% of ₹850 =
5. 5.28 + 34 =
6. 6.120 ÷ 4 =
7. 7.A film starts at 7:40 and ends at 9:30. How many minutes long is the film?
8. 8.21² =
9. 9.60 + ? = 100
10. 10.448 ÷ 7 =
11. 11.2 + ? = 10
12. 12.174 ÷ 6 =
13. 13.74 + ? = 100
14. 14.Double 62 =
15. 15.Half of 26 =
16. 16.19 + 19 =
17. 17.Double 79 =
18. 18.1013 − 995 =
19. 19.A train leaves at 2:05 and reaches the next city at 3:15. How many minutes is the journey?
20. 20.A cricket match starts at 7:30 and the first innings ends at 8:00. How many minutes did the innings last?
21. 21.Best estimate of 19 × 87? (a) 18000 (b) 180 (c) 1800
22. 22.Best estimate of 361 + 789? (a) 1000 (b) 1400 (c) 1200
23. 23.A film starts at 5:55 and ends at 7:15. How many minutes long is the film?
24. 24.Best estimate of 23 × 46? (a) 100 (b) 10000 (c) 1000
25. 25.You start your homework at 2:30 and finish at 5:20. How many minutes did you work?
26. 26.63 + ? = 100
27. 27.214 − 188 =
28. 28.66 + ? = 100
29. 29.17 × 8 =
30. 30.13² =
31. 31.35 + 6 =
32. 32.62 − 52 =
33. 33.You buy a bag of mangoes for ₹356 and pay with a ₹500 note. How much change do you get, in rupees?
34. 34.51 + 29 =
35. 35.19 + 18 =
36. 36.What is the remainder when 35 is divided by 4?
37. 37.You buy a bag of mangoes for ₹86 and pay with a ₹100 note. How much change do you get, in rupees?
38. 38.24 + 69 =
39. 39.You buy a notebook for ₹14 and a pen for ₹16. You pay with a ₹100 note. How much change do you get, in rupees?
40. 40.67 + 5 =

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