Students add two two-digit numbers crossing a tens boundary (38 + 25), exchanging ten ones for a ten with apparatus and connecting the exchange to make-ten bridging. This is the summit of KS1 addition (RTP 2AS–4).
Intermediate Level
Students add two two-digit numbers crossing a tens boundary (38 + 25), exchanging ten ones for a ten with apparatus and connecting the exchange to make-ten bridging. This is the summit of KS1 addition (RTP 2AS–4).




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