Common Core Math has ushered in new ways of doing addition. No longer do we have to align numbers
vertically as done in the ‘old’ standard algorithm. Second graders have been taught seven other
ways to solve addition problems. Here is
a list of the strategies that have been presented:
- mental math
- building to the next ten
- building to the next hundred
- partial sums
- decomposing numbers
- column addition
- number line
Michael states “I was excited and proud that I learned other
ways to solve addition problems. Before learning the different strategies, I always
used the building to the next ten or next hundred. Now, I really don’t have a favorite, I like
them ALL!”
Kallie states “I really like the partial sums method because
you’re grouping and adding all the hundreds together, then the tens, and finally
the ones. It’s like looking at the
number in expanded form.”
When I learned the other ways of doing addition, “I felt
excited because it taught me more ways to find the answer,” says Ethan.
Students were given problems to solve and here is an
explanation of the strategy they used to solve them.
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