Will this help with my child's 1st grade math homework?

Yes. StudyPug covers all the topics in Colorado's 1st grade math curriculum, including addition and subtraction within 20, place value, time, and shapes, so your child can get unstuck on any homework problem quickly.

How long are the video lessons?

Most video lessons are short and focused, typically a few minutes each. They are designed so your child can watch the exact lesson they need without sitting through a full class, making it easy to fit into a busy evening.

Is there a Colorado state test for 1st grade math?

Colorado's statewide CMAS assessments for math begin in 3rd grade. There is no statewide summative math test in 1st grade, though teachers use classroom assessments throughout the year to track progress.

Can my child use StudyPug on a tablet or phone?

Yes. StudyPug works on tablets, phones, laptops, and desktop computers, so your child can practice 1st grade math at home, in the car, or anywhere else that suits your family's schedule.

Can I try StudyPug before paying?

Yes. StudyPug offers free sample lessons so you can see the content before committing. Every paid plan also includes a 30-day money-back guarantee, so there is no risk in getting started.

CO 1st Grade Math Curriculum

Give your child the support they need to keep up with Colorado's 1st grade math class. StudyPug covers every strand your child is learning at school, from adding and subtracting within 20 to telling time and exploring shapes.

CO 1st Grade Math Curriculum

IDStandardStudyPug Topic

1.OA.A.1Use addition and subtraction within 20 to solve word problems
- Addition word problems up to 20
- Using models to add up to 20
- Subtracting with digits up to 20
- Subtracting with objects up to 20
- Subtraction word problems up to 20
1.OA.A.2Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20
- Adding with 3 numbers up to 20
1.OA.B.3Apply properties of operations as strategies to add and subtract
- Subtraction facts up to 20
- Verifying subtraction statements
1.OA.B.4Understand subtraction as an unknown-addend problem
- Completing subtraction statements up to 20
- Understanding the subtraction sign
1.OA.C.6Add and subtract within 20, demonstrating fluency for addition and subtraction within 10
- Addition facts up to 20
1.OA.D.7Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false
- Verifying addition statements
1.OA.D.8Determine the unknown whole number in an addition or subtraction equation relating three whole numbers
- Addition with regrouping up to 20
- Complete the addition statement up to 5
- Completing the addition statement up to 10
- Complete the subtraction statement up to 5
- Complete the subtraction statement up to 10
1.NBT.A.1Count to 120, starting at any number less than 120
- Converting dot grids to numbers up to 100
- Missing values in a number grid up to 100
- Number sequences with 1,2,3,5,10
- Ordinal numbers
- Writing numbers as words
- Writing words as numbers
1.NBT.B.2Understand that the two digits of a two-digit number represent amounts of tens and ones
- Place values of digits up to 99
- Counting the value of a digit up to 99
- Numeral expanding up to 99
- Identifying tens and ones
1.NBT.B.3Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <
- Comparing values up to 99
1.NBT.C.4Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10
- Adding with digits up to 20
- Adding digits up to 100
- Adding with doubles up to 100
- Using counting to add digits up to 100
- Addition strategies
- Addition with regrouping up to 100
- Using models to add up to 100
- Addition tables up to 100
- Completing addition statements up to 100
- Addition word problems up to 100
1.NBT.C.5Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count
- Adding numbers with 5s and 10s
1.NBT.C.6Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90
- Subtracting with the number zero
- Subtracting by 10s
- Subtracting with place value models up to 100
- Subtraction facts up to 100
- Completing subtraction images & statements
- Using objects to subtract up to 100
1.G.A.3Partition circles and rectangles into two and four equal shares
- Sharing & partition up to 10
- Remainders from division up to 10

1st Grade Math

About 1st Grade Colorado math

Colorado 1st grade math follows the Colorado Academic Standards, which organize learning around operations and algebraic thinking, number and operations in base ten, measurement, data, and geometry. Students work on addition and subtraction within 20, place value with two-digit numbers, measuring length, telling time, reading data, and building shapes. StudyPug provides step-by-step lessons and practice problems matched to every strand in this course.

Operations and algebraic thinking, number and operations in base ten, measurement, data, and geometry
Video lessons covering every 1st grade Colorado math topic
Practice problems and worked examples for each strand
Content aligned to Colorado Academic Standards for 1st grade math

Curriculum topics by strand

Lessons and practice for every strand, aligned to Colorado Academic Standards for 1st grade math.

Topic includes:

Practice

Video

Quiz

Standard

StudyPug Topic

Colorado 1st Grade Math Topics

Operations and Algebraic Thinking: Use addition and subtraction within 20 to solve word problems, apply properties of operations, understand subtraction as an unknown-addend problem, and determine unknowns in equations.
Number and Operations in Base Ten: Count to 120, understand tens and ones in two-digit numbers, compare two-digit numbers using >, =, and <, add within 100, and subtract multiples of 10.
Measurement and Data: Order objects by length, express length in whole-number units, tell and write time in hours and half-hours, and organize and interpret data with up to three categories.
Geometry: Distinguish defining from non-defining attributes, compose two-dimensional and three-dimensional shapes, and partition circles and rectangles into equal shares.

How StudyPug Helps Colorado 1st Grade Math Students

When your child gets stuck on a topic like place value or telling time, they can go straight to the matching lesson on StudyPug and watch a clear, step-by-step explanation before trying practice problems on their own. Our grade 1 math practice test is a great way to check understanding across all the strands before a classroom quiz.

Every lesson on 1 class maths follows the same sequence Colorado teachers use, so your child is always working on what is relevant to their class right now.

Aligned to Colorado 1st Grade Math Curriculum

StudyPug's 1st grade math content is built to match the Colorado Academic Standards. Each strand - from operations and algebraic thinking through geometry - maps directly to what Colorado schools teach in 1st grade, so families can trust that the lessons here reflect exactly what is expected in the classroom. If your child is moving up from kindergarten, the co kindergarten math curriculum page shows the foundation they have already built.

Ready to put your Grade 1 Math skills to the test?

Jump into practice questions for every CO Grade 1 Math topic - with instant feedback and step-by-step video solutions when you get stuck.

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Written by the StudyPug Math Team

Last updated June 5, 2026

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