Class 7 · Chapter 10

Operations with Integers

Advanced integer arithmetic: multiplication, division, powers.

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Ganita Prakash · Class 7 Part 2 (2026-27)

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Detailed theory

Multiplication: same signs positive, different signs negative. Division follows same.

(-15)\div 3 = -5

Key concepts & formulas

(+)(+) = +, (-)(-) = +, (+)(-) = -, (-)(+) = -

Division follows the same sign rules.

(-a)^n

: positive if

n

even, negative if

n

odd.

Distributive:

a(b+c) = ab+ac

Integer arithmetic is closed under

+, -, \times

(not always

\div