Tuesday, April 29, 2014

Adding Multiples of Ten

First graders have been building 2-digit numbers with Base 10 blocks (strips of 10s and single 1s) to see concrete representations of the numbers they are working with.  Today they added a multiple of 10 onto a 2-digit number (26 + 30) and practiced counting "off the decade"  using their strips of 10s to find their totals.  

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