Ex: Subtraction start unknown Ex: Part-part-whole whole unknown Ex: Part-part-whole part unknown Ex: Comparison difference unknown Ex: Comparison larger part unknown Ex: Comparison smaller part unknown Note(s): Grade Level(s): Kindergarten explained the strategies used to solve problems involving adding and subtracting within 10 using spoken words, concrete and pictorial models, and number sentences. Grade 2 will add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations. Various mathematical process standards will be applied to this student expectation as appropriate. TxRCFP: Solving problems involving addition and subtraction TxCCRS: I. Numeric Reasoning II.D. Algebraic Reasoning Representations – VIII. Problem Solving and Reasoning IX. Communication and Representation X. Connections Generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20. Generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20. Generate, Solve PROBLEM SITUATIONS WHEN GIVEN A NUMBER SENTENCE INVOLVING ADDITION OR SUBTRACTION OF NUMBERS WITHIN 20 Including, but not limited to:
Ex: Subtraction start unknown Ex: Part-part-whole whole unknown Ex: Part-part-whole part unknown Ex: Comparison difference unknown Ex: Comparison larger part unknown Ex: Comparison smaller part unknown Note(s): Grade Level(s): Kindergarten explained the strategies used to solve problems involving adding and subtracting within 10 using spoken words, concrete and pictorial models, and number sentences. Grade 2 will add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations. Various mathematical process standards will be applied to this student expectation as appropriate. TxRCFP: Solving problems involving addition and subtraction TxCCRS: I. Numeric Reasoning II.D. Algebraic Reasoning – Representations VIII. Problem Solving and Reasoning IX. Communication and Representation X. Connections Generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20. Generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20. Generate, Solve PROBLEM SITUATIONS WHEN GIVEN A NUMBER SENTENCE INVOLVING ADDITION OR SUBTRACTION OF NUMBERS WITHIN 20 Including, but not limited to: