Presentation (Powerpoint) File
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Given various point totals for a beanbag toss game, students determine how Valeria and Ethan each reached their total score. The student is expected to recognize addition situations as putting together or combining and subtraction situations as taking part or taking from. The student is also expected to use place value and the relationship between addition and subtraction to find sums and differences whether or not necessary to compose or decompose tens and hundreds.