CCSS.MATH.CONTENT.1.OA.C.6 — opens in a new tab
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
20 resources
Addition Story Problems – Year 1
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Australian Money Unit - Year 1
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Building to 10 Year 1 Maths Unit
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Counting Back Year 1 Maths Unit
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Counting On Maths Unit – Year 1
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Equal Sharing and Grouping Year 1
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Fair Shares for Our Classroom - Year 1
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Halves - Year 1 Maths Unit
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Introduction to Subtraction – Year 1
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Introduction to Subtraction – Year 1
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Money Coins – Year 1
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Pack, Group and Check - Year 1
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Part-Part Whole & Partitioning – Year 1
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Subtraction Word Problems Year 1
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Year 1 Addition & Subtraction Story Problems Unit | Worksheets, Games & Assessment
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Year 1 Addition and Subtraction Problem Solving
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Year 1 Addition Strategies Unit
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Year 1 Introduction to Subtraction Variety Pack | 2 Maths Units
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Year 1 Modelling Money Problems Unit
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Year 1 Money Unit Variety Pack | 2 Maths Units
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