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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
2nd grade
Add and subtract within 100
Strategies for adding within 100
Strategies for adding within 100
Learn strategies for adding two-digit numbers.
Breaking apart 2-digit addition problems
Break apart 2-digit addition problems
Adding 53+17 by making a group of 10
Adding by making a group of 10
Add 2-digit numbers by making tens
Strategies for adding 2-digit numbers
Select strategies for adding within 100