1Common Core-aligned · Grade 1

Grade 1 Math Worksheets

Free printable and interactive Grade 1 math worksheets aligned to Common Core. 151 worksheets so far. Every worksheet has an answer key and can be completed online with instant feedback.

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Grade 1 Math topics & skills

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Operations & Algebraic Thinking

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.

Number & Operations in Base Ten

1.NBT.A.1

Count to 120 starting at any number, and read and write numerals to 120.

1.NBT.B.2.a

Understand that 10 is a bundle of ten ones.

1.NBT.B.2.b

Understand that numbers from 11 to 19 are a ten and some ones.

1.NBT.B.2.c

Understand that 10, 20, 30, up to 90 mean some tens and zero ones.

1.NBT.B.3

Compare two-digit numbers using place value and the symbols >, =, and <.

1.NBT.C.4

Add within 100 using models and place-value strategies, including adding tens and ones.

1.NBT.C.5

Find 10 more or 10 less than a two-digit number in your head.

1.NBT.C.6

Subtract multiples of 10 from multiples of 10 in the range 10 to 90.

Measurement & Data

1.MD.A.1

Order three objects by length and compare two lengths using a third object.

1.MD.A.2

Measure length by laying same-size units end to end with no gaps or overlaps.

1.MD.B.3

Tell and write time to the hour and half hour on analog and digital clocks.

1.MD.C.4

Organize, show, and read data with up to three categories.

Geometry

1.G.A.1

Tell apart the features that define a shape from features that do not, such as color.

1.G.A.2

Combine flat or solid shapes to make new shapes.

1.G.A.3

Split circles and rectangles into two or four equal parts and name them halves, fourths, or quarters.