Mental Maths Questions Worksheet for Class 5
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.
NameDateTime takenScore ___ / 40
- 1.67 + 29 =
- 2.38 + 9 =
- 3.Best estimate of 39 × 92? (a) 3600 (b) 360 (c) 36000
- 4.62 − 36 =
- 5.48 ÷ 3 =
- 6.Best estimate of 97 × 26? (a) 3000 (b) 30000 (c) 300
- 7.200 ÷ 8 =
- 8.24 laddoos are packed in boxes of 5. How many laddoos are left over?
- 9.581 + 99 =
- 10.287 ÷ 7 =
- 11.A cricket match starts at 6:10 and the first innings ends at 9:10. How many minutes did the innings last?
- 12.63 − 29 =
- 13.67 × 4 =
- 14.10% of ₹270 =
- 15.23 + 57 =
- 16.You buy a bag of mangoes for ₹45 and pay with a ₹100 note. How much change do you get, in rupees?
- 17.A film starts at 7:30 and ends at 9:50. How many minutes long is the film?
- 18.100 − 63 =
- 19.39 − 19 =
- 20.25% of ₹890 =
- 21.36 + 78 =
- 22.128 ÷ 4 =
- 23.6 + ? = 10
- 24.86 children stand in rows of 7. How many full rows can they make?
- 25.Best estimate of 83 × 18? (a) 1600 (b) 16000 (c) 160
- 26.79 + 29 =
- 27.29 × 8 =
- 28.14 + ? = 100
- 29.220 ÷ 4 =
- 30.12² =
- 31.Best estimate of 700 + 645? (a) 1300 (b) 1500 (c) 1100
- 32.50% of ₹360 =
- 33.49 + 34 =
- 34.36 × 8 =
- 35.27 + 6 =
- 36.10% of ₹750 =
- 37.27 + 28 =
- 38.28² =
- 39.79 × 7 =
- 40.1030 − 988 =
Answer key
- 96
- 47
- 3600
- 26
- 16
- 3000
- 25
- 4
- 680
- 41
- 180
- 34
- 268
- 27
- 80
- 55
- 140
- 37
- 20
- 222.5
- 114
- 32
- 4
- 12
- 1600
- 108
- 232
- 86
- 55
- 144
- 1300
- 180
- 83
- 288
- 33
- 75
- 55
- 784
- 553
- 42
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths