Add and subtract to and from a 3-digit number bridging 100
Lesson 13 / 15
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I can add and subtract to and from a 3-digit number bridging 100.
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Addition and subtraction calculations can represent counting on and back over the 100s boundary.
When you count on in tens, sometimes the 10s digit only changes and sometimes the 100s digit changes.
When you count back in tens, sometimes the 10s digit only changes and sometimes the 100s digit changes.
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