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Addition and subtraction
Relate addition and subtraction
Addition within 20
Subtraction within 20
Equal sign
Missing number within 20
Word problems within 20
Word problems with "more" and "fewer"
Adding 1s and 10s
Intro to addition with 2-digit numbers
Math
1st grade math
Addition and...
Explore the equal sign as a symbol of balance, understanding its role in showing the equality of two sides in addition and subtraction equations.
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Khan Academy
6th - 10th Grade
10 Qs
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