Common Core Math: Grade 1: Algebraic Thinking

In first grade, students interpret and perform addition and subtraction up to 20, including addition of three whole numbers. Students represent their thinking with concrete objects, visual representations and algebraic equations and apply arithmetic to real-world scenarios described in word problems. Students apply the commutative property of addition to add numbers in any order and explore the inverse relationship between addition and subtraction.

Common Core Standards

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Look up a specific standard:

CCSS.Math.Content.1.OA.A.1
first grade common core standard OA.B.4

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first grade operations and algebraic thinking common core standards

Equations

Solve addition and subtraction equations.

Determine if an equation is true or false (CCSS.Math.Content.1.OA.D.7):

3 + 2 = 6 + 1
7 = 8 - 1

Solve equations (CCSS.Math.Content.1.OA.D.8):

solve 5 + 9 = ?
solve ? + 14 = 18
solve 12 + ? = 17

Addition & Subtraction

Perform addition and subtraction.

Add and subtract whole numbers (CCSS.Math.Content.1.OA.C.6):

7 + 5
14 - 5
add 3 and 8
subtract 6 from 17

Add multiple whole numbers (CCSS.Math.Content.1.OA.A.2):

3 + 4 + 7
add 2, 8, and 5
sum of 1, 8, 4

Use addition and subtraction in counting (CCSS.Math.Content.1.OA.C.5):

count by twos from 4 to 20
count from 15 to 0 by 3

更进一步

Step-by-Step Solutions for ArithmeticPre-Algebra Web AppFree Unlimited Arithmetic Practice Problems

相关示例

  • Common Core Math: Algebraic Thinking
  • Common Core Math: Grade 1
  • Elementary Math