Students add two two-digit numbers where no tens boundary is crossed (34 + 25), partitioning both into tens and ones and recombining, fully modelled with base-10 apparatus before any recording.
Intermediate Level
Students add two two-digit numbers where no tens boundary is crossed (34 + 25), partitioning both into tens and ones and recombining, fully modelled with base-10 apparatus before any recording.




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Q: 10
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Q: 10
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Q: 10
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