Doubles to Ten

  Common Core Curriculum alignment

• CCSS.MATH.CONTENT.1.OA.C.6

  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 - ...

  In Grade 1Standards for Mathematical PracticeOperations & Algebraic ThinkingAdd and subtract within 20
• CCSS.MATH.CONTENT.1.NBT.C.4

  Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship b...

  In Grade 1Standards for Mathematical PracticeNumber & Operations in Base TenUse place value understanding and properties of operations to add and subtract
• CCSS.MATH.CONTENT.2.NBT.B.5

  Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

  In Grade 2Standards for Mathematical PracticeNumber & Operations in Base TenUse place value understanding and properties of operations to add and subtract