Addition and subtraction up to 1000: split by place value, bridging a decade, compensation, and constant difference, revealed as number-line jumps and base-ten pieces.
Open toolSkip counting to equal groups, using tens and fives, doubling, near facts, the distributive property, and doubling & halving: every strategy shown as an array, never a bare fact.
Open toolThink multiplication, equal sharing, repeated subtraction, breaking apart the dividend, halving, and near facts: six strategies, each shown as the array or number-line model behind it, never a bare fact.
Open toolEvery routine here is grounded in real research. See why.
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