# Free grade 1 Math Worksheets

**Skills available for Common Core first-grade math standards**

## 1.OA Operations and Algebraic Thinking

1.OA. Represent and solve problems involving addition and subtraction.

1.OA.A.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Add and Subtract within 20 Word Problems Worksheets – 1.OA.A.1

Model and write addition sentences for word problems – sums up to 10 (1-H.5)

Addition sentences for word problems – sums up to 10 (1-H.6)

Subtraction word problems with pictures – up to 10 (1-L.1)

Write subtraction sentences for word problems with pictures – up to 10 (1-L.2)

Use cube trains to solve subtraction word problems – up to 10 (1-L.3)

Subtraction word problems – up to 10 (1-L.4)

Model and write subtraction sentences for word problems – up to 10 (1-L.5)

Subtraction sentences for word problems – up to 10 (1-L.6)

Comparison word problems up to 10: how many more or fewer? (1-N.3)

Comparison word problems up to 10: what is the larger amount? (1-N.4)

Comparison word problems up to 10: what is the smaller amount? (1-N.5)

Comparison word problems up to 10 (1-N.6)

Word problems with unknown sums and differences – up to 10 (1-O.1)

Word problems with change unknown – up to 10 (1-O.2)

Word problems with start unknown – up to 10 (1-O.3)

Word problems with one addend unknown – up to 10 (1-O.4)

Word problems with both addends unknown – up to 10 (1-O.5)

Word problems involving addition and subtraction – up to 10 (1-O.6)

Match word problems to addition and subtraction sentences – up to 10 (1-O.)

Addition word problems – sums up to 20 (1-R.1)

Addition sentences for word problems – sums up to 20 (1-R.2)

Subtraction word problems – up to 20 (1-U.1)

Subtraction sentences for word problems – up to 20 (1-U.2)

Comparison word problems up to 20: how many more or fewer? (1-W.1)

Comparison word problems up to 20: what is the larger amount? (1-W.2)

Comparison word problems up to 20: what is the smaller amount? (1-W.3)

Comparison word problems up to 20 (1-W.4)

Word problems involving addition and subtraction – up to 20 (1-X.1)

Match word problems to addition and subtraction sentences – up to 20 (1-X.)

1.OA.A.2 Solve word problems that call for the addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Add three numbers – word problems (1-R.3)

1.OA.B Understand and apply properties of operations and the relationship between addition and subtraction.

1.OA.B.3 Apply properties of operations as strategies to add and subtract.

Add in any order (1-F.1)

Use addition to subtract – up to 10 (1-J.)

Fact families – up to 10 (1-M.1)

Related addition facts (1-P.1)

Add three numbers – make ten (1-P.13)

Add three numbers (1-Q.14)

Related subtraction facts (1-S.1)

Use addition to subtract – up to 20 (1-S.)

1.OA.B.4 Understand subtraction as an unknown-addend problem.

Complete the addition sentence to make ten – with models (1-F.)

Complete the addition sentence to make ten (1-F.3)

Use addition to subtract – up to 10 (1-J.)

Relate addition and subtraction sentences (1-S.2)

Use addition to subtract – up to 20 (1-S.)

Complete the addition sentence – sums up to 10 (1-Z.1)

Complete the addition sentence – sums up to 20 (1-Z.3)

1.OA.C Add and subtract within 20.

1.OA.C.5 Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Addition sentences using number lines – sums up to 10 (1-E.6)

Add by counting on – sums up to 10 (1-F.2)

Subtraction sentences using number lines – up to 10 (1-I.6)

Subtract by counting back – up to 10 (1-J.1)

Subtract by counting on – up to 10 (1-J.2)

Addition sentences using number lines – sums up to 20 (1-P.2)

Subtraction sentences using number lines – up to 20 (1-S.3)

Subtract by counting back – up to 20 (1-S.4)

Subtract by counting on – up to 20 (1-S.6)

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 – 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).

Add in any order (1-F.1)

Add by counting on – sums up to 10 (1-F.2)

Addition facts – sums up to 10 (1-G.1)

Make a number using addition – sums up to 10 (1-G.2)

Ways to make a number – addition sentences up to 10 (1-G.3)

Subtract zero and all (1-I.8)

Subtract by counting back – up to 10 (1-J.1)

Subtract by counting on – up to 10 (1-J.2)

Use addition to subtract – up to 10 (1-J.)

Subtraction facts – up to 10 (1-K.1)

Make a number using subtraction – up to 10 (1-K.2)

Ways to make a number – subtraction sentences up to 10 (1-K.3)

Ways to subtract from a number – subtraction sentences up to 10 (1-K.4)

Addition and subtraction facts – up to 10 (1-M.3)

Add doubles – with models (1-P.4)

Add doubles (1-P.5)

Add using doubles plus one (1-P.7)

Add using doubles minus one (1-P.8)

Make ten to add – with models (1-P.11)

Make ten to add (1-P.12)

Add three numbers – make ten (1-P.13)

Addition

Addition facts – sums up to 20 (1-Q.12)

Make a number using addition – sums up to 20 (1-Q.13)

Relate addition and subtraction sentences (1-S.2)

Subtract by counting back – up to 20 (1-S.4)

Use ten to subtract (1-S.5)

Use addition to subtract – up to 20 (1-S.)

Subtract by counting on – up to 20 (1-S.6)

Subtract doubles (1-S.7)

Subtracting 1 (1-T.1)

Subtracting 2 (1-T.2)

Subtracting 3 (1-T.3)

Subtracting 4 (1-T.4)

Subtracting 5 (1-T.5)

Subtracting 6 (1-T.6)

Subtracting 7 (1-T.7)

Subtracting 8 (1-T.8)

Subtracting 9 (1-T.9)

Subtracting 10 (1-T.10)

Subtracting 0 (1-T.11)

Subtraction facts – up to 20 (1-T.12)

Make a number using subtraction – up to 20 (1-T.13)

Addition and subtraction facts – up to 20 (1-V.1)

Addition and subtraction – ways to make a number (1-V.2)

1.OA.D Work with addition and subtraction equations.

1.OA.D.7 Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

Addition sentences: true or false? (1-Y.3)

Addition sentences: which is true? (1-Y.4)

Subtraction sentences: true or false? (1-Y.5)

Subtraction sentences: which is true? (1-Y.6)

Addition and subtraction sentences: which is true? (1-Y.7)

Which sign makes the number sentence true? (1-Y.8)

1.OA.D.8 Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

Complete the addition sentence to make ten – with models (1-F.)

Complete the addition sentence to make ten (1-F.3)

Add doubles – complete the sentence (1-P.6)

Complete the addition sentence – sums up to 10 (1-Z.1)

Complete the subtraction sentence – up to 10 (1-Z.2)

Complete the addition sentence – sums up to 20 (1-Z.3)

Complete the subtraction sentence – up to 20 (1-Z.4)

1.NBT Number and Operations in Base Ten

1.NBT.A Extend the counting sequence.

1.NBT.A.1 Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

Counting review – up to 20 (1-A.3)

Count on ten frames – up to 40 (1-A.4)

Counting – up to 100 (1-A.5)

Counting forward – up to 100 (1-A.6)

Number lines – up to 100 (1-A.8)

Counting on the hundred chart (1-A.9)

Counting forward – up to 120 (1-B.1)

Number lines – up to 120 (1-B.3)

Counting on a number chart – up to 120 (1-B.4)

Sequences – count up and down by 1 (1-B.5)

Writing numbers in words – convert words to digits (1-B.6)

Writing numbers in words – convert digits to words (1-B.7)

1.NBT.B Understand place value.

1.NBT.B.2 Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

Hundred chart (1-A.10)

Counting tens and ones – up to 99 (1-AA.4)

Place value models up to 100 (1-AA.5)

Write numbers as tens and ones (1-AA.7)

1.NBT.B.2a 10 can be thought of as a bundle of ten ones – called a “ten.”

1.NBT.B.2b The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.

Counting tens and ones – up to 20 (1-AA.1)

Place value models up to 20 (1-AA.2)

Write numbers as tens and ones up to 20 (1-AA.3)

1.NBT.B.2c The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

Convert between tens and ones – multiples of ten (1-AA.6)

1.NBT.B.3 Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.

Compare numbers up to 100 using symbols (1-BB.3)

1.NBT.C Use place value understanding and properties of operations to add and subtract.

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 between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

Add three numbers – use doubles (1-P.10)

Add three numbers (1-Q.14)

Regroup tens and ones – ways to make a number (1-AA.8)

Regroup tens and ones (1-AA.9)

Add multiples of ten (1-CC.2)

Use models to add a multiple of ten and a one-digit number (1-DD.1)

Add a multiple of ten and a one-digit number (1-DD.2)

Use models to add a multiple of ten and a two-digit number (1-DD.3)

Add a multiple of ten and a two-digit number (1-DD.4)

Use models to add a two-digit and a one-digit number – without regrouping (1-DD.5)

Add a two-digit and a one-digit number – without regrouping (1-DD.6)

Use models to add a two-digit and a one-digit number – with regrouping (1-DD.7)

Add a two-digit and a one-digit number – with regrouping (1-DD.8)

Use models to add two-digit numbers – without regrouping (1-DD.9)

Add two-digit numbers without regrouping – sums to 100 (1-DD.10)

Use models to add two-digit numbers – with regrouping (1-DD.11)

Add two-digit numbers with regrouping – sums to 100 (1-DD.12)

1.NBT.C.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Ten more or less (1-CC.1)

1.NBT.C.6 Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.

Subtract multiples of ten (1-CC.3)

1. MD Measurement and Data

1.MD.A Measure lengths indirectly and by iterating length units.

1.MD.A.1 Order three objects by length; compare the lengths of two objects indirectly by using a third object.

Compare objects: length and height (1-EE.1)

1.MD.A.2 Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps.

Measure length with objects (1-EE.6)

Measure length with cubes (1-EE.7)

1.MD.B Tell and write time.

1.MD.B.3 Tell and write time in hours and half-hours using analog and digital clocks.

Match digital clocks and times (1-FF.1)

Match analog clocks and times (1-FF.2)

Match analog and digital clocks (1-FF.3)

Read clocks and write times (1-FF.4)

1.MD.C Represent and interpret data.

1.MD.C.4 Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.

Which picture graph is correct? (1-II.1)

Interpret picture graphs (1-II.2)

Which tally chart is correct? (1-II.3)

Interpret tally charts (1-II.4)

Which table is correct? (1-II.5)

Interpret data in tables (1-II.6)

Count shapes in a Venn diagram (1-MM.1)

Sort shapes into a Venn diagram (1-MM.2)

1. G Geometry

1.G.A Reason with shapes and their attributes.

1.G.A.1 Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.

Name the two-dimensional shape (1-KK.1)

Select two-dimensional shapes (1-KK.2)

Count sides and corners (1-KK.4)

Compare sides and corners (1-KK.5)

Open and closed shapes (1-KK.8)

Two-dimensional and three-dimensional shapes (1-LL.1)

Name the three-dimensional shape (1-LL.2)

Cubes and rectangular prisms (1-LL.3)

Select three-dimensional shapes (1-LL.4)

Count vertices, edges, and faces (1-LL.5)

Compare vertices, edges, and faces (1-LL.6)

Identify faces of three-dimensional shapes (1-LL.8)

1.G.A.2 Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape.

Compose two-dimensional shapes (1-KK.9)

1.G.A.3 Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

Equal parts – halves and fourths (1-NN.1)

Identify halves and fourths (1-NN.5)

Make halves (1-NN.6)

Make fourths (1-NN.7)

Make halves and fourths (1-NN.8)

Make halves and fourths in different ways (1-NN.9)