Problem_Solving_Types_2nd_Grade.docx - 1 2nd Grade...

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1 2 nd Grade –Problem Solving Types (2.4C) solve one-step and multi-step word problems involving addition and subtraction within 120 using a variety of strategies based on place value, including algorithms; and (2.4D) generate and solve problem situations for a given mathematical number sentence involving addition and subtraction of whole numbers within 120. (2.7C) represent and solve addition and subtraction word problems where unknowns may be any one of the terms in the problem. JOINING Result Unknown Start Unknown Change Unknown Sara has 26 dolls. Her mother gives her 5 more dolls. Now how many dolls does she have? 26 + 5 = ? ? = 26 + 5 Carol got $35 for her birthday. She then had $92 in all. How much money did she have to start? ? + 35 = 92 92 = ? + 35 92 – 35 = ? Another example: Pam needs 8 tickets to get on a ride. She has some tickets. She needs 2 more tickets. How many tickets does Pam already have? Mark collected 18 baseball cards. His friend has 20 baseball cards. How many more baseball cards does Mark need to have as many as his friend?
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