Page 16 - Math;Extra steps: book 1c
P. 16

•       Missing numbers and signs.                                                                     •






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       Do ~ou notice onuthinq    about the n.umber sen.ten.ces WhLCh are side b~ side?

                   -                      1:2q Addition 0 - 10
                 Date                     Commututivitq  .
   11   12   13   14   15   16   17   18   19   20   21