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Column addition without regrouping

Add two-digit numbers in columns where no carrying is needed.

Taught in Primary 2 in Nigeria (NERDC), Year 3 in United Kingdom (National Curriculum), Grade 3 in Canada (Ontario).

Compare curricula (choose 2–3)

Nigeria (NERDC)

Primary 2

Strand
Basic Operations
Called
Column addition without regrouping
How it's taught
NERDC introduces vertical arrangement early in Primary 2: digits aligned by place value, sums written beneath a ruled line.
More Basic Operations skills at this level

United Kingdom (National Curriculum)

Year 3

Strand
Addition and Subtraction
Called
Column addition without regrouping
How it's taught
Concrete–pictorial–abstract progression: bar models and number lines before formal columnar addition/subtraction with exchanging.
More Addition and Subtraction skills at this level

Canada (Ontario)

Grade 3

Strand
Number
Called
Column addition without regrouping
How it's taught
Student-invented and mental strategies first (decomposing, compensating, open number lines); standard algorithms are consolidated later than in other systems.
More Number skills at this level

Builds on