subtract

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As Meghan reflected on her students' use of the adding up-strategy, she commented, "I noticed right away that my students like to add more than subtract and that they do not like to deal with problems where they would traditionally have to regroup.
I only subtracted 4, but I was supposed to subtract 8.
When we work on subtraction problems, my students often break apart the number and subtract parts at a time," Meghan explained.
For example, they would say the number 328 as "three hundred twenty-eight," and the order in which they would subtract it is by beginning with the "three hundred," then the "twenty," then the "eight.
Then she knew it was too hard to subtract 8 from 354, so she first subtracted one 4 and then the other 4.