lesson
Using Near Doubles to Add Within 20
Use near doubles (e.g., 4+5 using 4+4) to add within 20.

Use near doubles (e.g., 4+5 using 4+4) to add within 20.
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7 lessons
Use a variety of strategies to add within 20, including counting on, doubles, near doubles, and making ten, supported by objects and ten frames.