Children expand their understanding of number relationships and operations in their everyday environment.
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Compare, by counting or matching, two groups of up to five objects and communicate, “more,” “same as,” or “fewer” (or “less”).
Understand that adding one or taking away one changes the number in a small group of objects by exactly one.
Understand that putting two groups of objects together will make a bigger group and that a group of objects can be taken apart into smaller groups.
Solve simple addition and subtraction problems with a small number of objects (sums up to 10), usually by counting.