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Missing-number equations

Find the missing number that makes an equation true.

Taught in Primary 4 in Nigeria (NERDC), Year 4 in United Kingdom (National Curriculum), Grade 4 in Canada (Ontario).

Compare curricula (choose 2–3)

Nigeria (NERDC)

Primary 4

Strand
Algebraic Processes
Called
Open sentences
How it's taught
Algebraic Processes: open sentences (□ + 4 = 9) leading to simple equations with letters in upper primary.
More Algebraic Processes skills at this level

United Kingdom (National Curriculum)

Year 4

Strand
Algebra
Called
Missing-number equations
How it's taught
Algebra appears formally in Year 6: missing-number problems, simple formulae and linear sequences.
More Algebra skills at this level

Canada (Ontario)

Grade 4

Strand
Algebra
Called
Missing-number equations
How it's taught
Algebra strand from Grade 1: patterns, then variables and equalities; includes coding expectations (sequential events, loops, conditionals).
More Algebra skills at this level

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