W.A.L.T: solve subtraction problems using place value partitioning.
1. If Jennifer had collected 765 World War ! stamps during the year, how many more stamps does she need to collect to make a total of 1200 stamps
765+435=1200
700+300=1000
60+130=190
5+5=10
1000+190+10=1200
300+130+5=435
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