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Gyaan Maths
CBSE · Class 6-12
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Class 7 · Ganita Prakash
Unit 2 · Class 7Ganita Prakash
Arithmetic Expressions
Order of operations, brackets, and evaluating expressions.
Lessons
3 concepts
1
Order of Operations
Follow BODMAS strictly.
6
+
2
×
3
=
6
+
6
=
12
6 + 2\times 3 = 6 + 6 = 12
6
+
2
×
3
=
6
+
6
=
12
, not
24
24
24
. Multiplication comes before addition.
2
Brackets
Solve innermost brackets first, then work outward.
2
×
[
3
+
(
4
−
1
)
]
=
2
×
[
3
+
3
]
=
12
2\times [3 + (4-1)] = 2\times [3+3] = 12
2
×
[
3
+
(
4
−
1
)]
=
2
×
[
3
+
3
]
=
12
.
3
Common Mistakes
Forgetting BODMAS. Distributing signs incorrectly across brackets. Always double-check with substitution.
Skills to practise
Skill · medium
Arithmetic Expressions — Practice