Three Types of Addition and Subtraction Problems CCGPS.OA.1 con’t Result Change Start Unknown Unknown Unknown There are 29 There are 29 There are some students. Then students. Some students. Then 18 more show more show up. 18 left. Now up. How many Now there are there are 47. in all? 47. How many How many at students came? the beginning? 29 + 18=___ 29 + ___=47 __ - 18 = 47
Result Unknown There are 29 students. Then 18 more show up. How many in all? 29 + 18=___ Change Unknown There are 29 students. Some more show up. Now there are 47. How many students came? 29 + ___=47 Start Unknown There are some students. Then 18 left. Now there are 47. How many at the beginning? __ - 18 = 47 Three Types of Addition and Subtraction Problems CCGPS.OA.1 con’t
2nd_grade_kid_friendly_math_standards.docx