It's helpful when you're adding two-digit or three-digit numbers ... Now you add the next column - the tens. 3 tens + 2 tens + 1 ten (from the regrouping) = 6 tens Image caption, That is 60.
It's helpful when you're adding two-digit or three-digit numbers ... Now you add the next column - the tens. 3 tens + 2 tens + 1 ten (from the regrouping) = 6 tens Image caption, That is 60.
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