1Grade 1 · Operations & Algebraic Thinking

Grade 1 Operations & Algebraic Thinking Worksheets

Free printable and interactive Grade 1 operations & algebraic thinking worksheets aligned to Common Core. 52 worksheets so far. Every worksheet has an answer key and can be completed online with instant feedback.

1.OA.A.1

Solve addition and subtraction story problems within 20 with the unknown in any position.

Worksheet
Grade 1
Whale Watch Boat Story Problems Within 20
Operations & Algebraic Thinking · 1.OA.A.1
Premium13 questions
Worksheet
Grade 1
Apple Orchard Story Problems: Add and Subtract Within 20
Operations & Algebraic Thinking · 1.OA.A.1
Free13 questions
Worksheet
Grade 1
All Aboard the School Bus: Story Problems Within 20
Operations & Algebraic Thinking · 1.OA.A.1
Premium14 questions
Worksheet
Grade 1
Birthday Party Story Problems: Find the Missing Number
Operations & Algebraic Thinking · 1.OA.A.1
Premium14 questions
Worksheet
Grade 1
Aquarium Story Problems Within 20
Operations & Algebraic Thinking · 1.OA.A.1
Premium14 questions

1.OA.A.2

Solve story problems that add three whole numbers with a sum up to 20.

1.OA.B.3

Use properties of addition, such as order and grouping, to add.

1.OA.B.4

Treat subtraction as finding an unknown addend.

1.OA.C.5

Connect counting on and counting back to adding and subtracting.

1.OA.C.6

Add and subtract within 20 using strategies, and within 10 fluently.

1.OA.D.7

Understand the equal sign and decide whether addition and subtraction equations are true or false.

1.OA.D.8

Find the unknown number in an addition or subtraction equation.