To add two or more numbers using the break apart strategy, the numbers are broken apart into the various place values.
To add 247 to 358 using the break apart strategy, we break the numbers apart as follows:
247 = 200 + 40 + 7 and
358 = 300 + 50 + 8
247 + 358 = (200 + 300) + (40 + 90) + (7 + 8) = 500 + 130 + 15 = 645.
