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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Illustrative Mathematics
6th grade (Illustrative Mathematics)
Unit 5: Arithmetic in base ten
Lesson 4: Adding and subtracting decimals with many non-zero digits
Adding three decimals
Adding three decimals
Sal adds 7.056+605.7+5.67 using the "standard algorithm".
License: CC BY-NC-SA by Khan Academy