Wednesday, December 09, 2015

Addition and subtraction

For the past six weeks, we have placed a heavy focus on pairs of numbers that add to ten; 6+4, 5+5, 7+3, etc.
Now that many kids are solid and fluent in these pairs, we are beginning to connect addition to subtraction. For example, if you know that 9+1=10, then you know that 10-9=1 and 10-1=9!

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