Colorado CMAS Grade 4 Math Free Worksheets: Printable Grade 4 Math Practice with Full Solutions

If third grade was about getting comfortable with the basic operations, fourth grade is about putting them to work on a bigger stage. Numbers reach into the hundred-thousands and have to be read, compared, and rounded. Multiplication becomes a two- and three-step procedure. Division begins handing back remainders that have to be interpreted. Fractions turn into real numbers — compared, ordered, added — and decimals make their first appearance, tied quietly to the fractions already in hand. Angles and geometry round out the year. It is a wide stretch of new material.

For a nine- or ten-year-old, that breadth can feel steep. But fourth-grade math is laid out in a logical order, with every skill resting on the one before. A student who practices each piece until it is steady usually finds the whole thing comes together by spring.

And the work matters well past this year. The multi-digit multiplication and division a student practices now is exactly what fifth grade leans on for fractions, area, and multi-step problems. The fraction work — equivalence, comparing, adding — is the groundwork for decimals, ratios, and eventually algebra. Fourth-grade practice is not spent on fourth grade alone; it is the base under every math year still ahead, which is reason enough to take it carefully.

These worksheets are made for that careful, step-by-step climb. Whether your child is in Denver, Colorado Springs, Aurora, or Boulder, each one isolates a single skill and offers enough practice to make it solid.

What’s on this page

You will find 43 single-skill PDFs here, each aligned to the Colorado Mathematics Standards at Grade 4. Every file stays on exactly one skill, so a student practicing long division is not also being tested on fraction equivalence, and a student working with angles is not sidetracked into multi-digit multiplication.

Each PDF starts with a one-page Quick Review that explains the skill in plain language, with one example worked through completely. Then come 20 practice problems that build from easy to harder, plus 4 word problems that place the skill in a real context. The final page is a student-facing answer key, with short, friendly explanations a fourth grader can read on their own and learn from.

Place Value & Multi-Digit Numbers

• Understanding Place Value Relationships — [4.NBT.A.1] each place is ten times the one to its right
• Reading and Writing Multi-Digit Numbers — [4.NBT.A.2] standard form, word form, and expanded form
• Comparing and Ordering Multi-Digit Numbers — [4.NBT.A.2] use place value and the symbols >, <, and =
• Rounding Multi-Digit Numbers — [4.NBT.A.3] round to any place from tens to hundred-thousands

Multi-Digit Arithmetic

• Adding Multi-Digit Whole Numbers — [4.NBT.B.4] the standard addition algorithm, with regrouping
• Subtracting Multi-Digit Whole Numbers — [4.NBT.B.4] the standard subtraction algorithm, including across zeros
• Multiplying by a One-Digit Number — [4.NBT.B.5] multiply up to four digits by a single digit
• Multiplying Two Two-Digit Numbers — [4.NBT.B.5] the area model and the standard algorithm side by side
• Dividing with Remainders — [4.NBT.B.6] divide and name the leftover as a remainder
• Finding Factors and Multiples — [4.OA.B.4] list every factor of a number and its first multiples
• Prime and Composite Numbers — [4.OA.B.4] exactly two factors means prime; more means composite

Operations & Problem Solving

• Multiplicative Comparisons — [4.OA.A.1] read ‘4 times as many’ as a multiplication statement
• Multiplicative Comparison Word Problems — [4.OA.A.2] solve ‘times as many’ stories with multiplication or division
• Multi-Step Word Problems — [4.OA.A.3] two or more operations in one real-world problem
• Interpreting Remainders — [4.OA.A.3] decide what the leftover means — round up, drop it, or use it
• Number and Shape Patterns — [4.OA.C.5] follow a rule and find the next terms in a pattern

Fractions

• Equivalent Fractions — [4.NF.A.1] the same amount written with different numbers
• Comparing Fractions — [4.NF.A.2] compare fractions with unlike denominators using benchmarks
• Adding Fractions with Like Denominators — [4.NF.B.3a] add the numerators, keep the denominator
• Subtracting Fractions with Like Denominators — [4.NF.B.3a] subtract the numerators, keep the denominator
• Decomposing Fractions — [4.NF.B.3b] break a fraction into a sum of unit fractions
• Adding and Subtracting Mixed Numbers — [4.NF.B.3c] work with the whole and fraction parts, including regrouping
• Multiplying a Fraction by a Whole Number — [4.NF.B.4b] repeated addition of a fraction, written as multiplication
• Fraction Word Problems — [4.NF.B.3d] real-world stories that call for adding or subtracting fractions

Decimals

• Fractions with Denominators 10 and 100 — [4.NF.C.5] rename tenths as hundredths and add the two
• Decimal Notation for Fractions — [4.NF.C.6] write tenths and hundredths as decimals, and back
• Comparing Decimals to Hundredths — [4.NF.C.7] line up the place values and compare with >, <, =
• Adding Decimal Fractions — [4.NF.C.5] add decimals to the hundredths place

Measurement & Data

• Converting Measurement Units — [4.MD.A.1] change from a larger unit to a smaller one
• Measurement Word Problems — [4.MD.A.2] length, weight, volume, and time in real situations
• Area of Rectangles — [4.MD.A.3] length times width — the space inside a rectangle
• Perimeter of Rectangles — [4.MD.A.3] the distance all the way around a rectangle
• Area and Perimeter Word Problems — [4.MD.A.3] decide whether a problem needs area or perimeter
• Line Plots with Fractions — [4.MD.B.4] read and use a line plot of fraction measurements

Angles

• Angles as Fractions of a Circle — [4.MD.C.5] a full turn is 360 degrees — find a fraction of it
• Measuring Angles with a Protractor — [4.MD.C.6] name angles acute, right, or obtuse by their measure
• Drawing Angles with Given Measures — [4.MD.C.6] know what a given degree measure should look like
• Adding and Subtracting Angles — [4.MD.C.7] an angle split into parts — find the missing part

Geometry

• Points, Lines, Rays, and Angles — [4.G.A.1] the building blocks of geometry and how to tell them apart
• Parallel and Perpendicular Lines — [4.G.A.1] lines that never meet, and lines that cross at a square corner
• Classifying Triangles — [4.G.A.2] sort triangles by their angles and their sides
• Classifying Quadrilaterals — [4.G.A.2] name four-sided shapes by their sides and angles
• Lines of Symmetry — [4.G.A.3] find the lines that fold a shape onto itself

How to use these worksheets at home

The best approach is also the simplest: short, regular sessions. A fourth grader does focused work for about fifteen minutes before attention wanders, so one PDF per sitting is the right size. Two or three of those a week will carry a student steadily through the year without ever feeling like a burden.

Running related skills back to back makes the practice feel connected. Pair “Multiplying by One-Digit Numbers” with “Multiplying by Two-Digit Numbers,” and the second is a clear step up rather than a fresh start. The same works for “Equivalent Fractions” before “Comparing Fractions,” or “Area of Rectangles” right before “Perimeter of Rectangles.” When two worksheets clearly belong together, the first prepares the ground for the second.

Set the answer key aside until the work is done, then review it together. At a table in Boulder or in a classroom in Aurora, that review — working through why an answer is right — is where the real learning takes place.

It is worth treating a rough worksheet as information rather than a judgment. A messy page on subtracting fractions usually means one step — finding the common denominator — needs another look, not that fractions as a whole have slipped away. Because each PDF covers a single skill, that weak spot is easy to locate. Hand your child the same sheet again a few days later; the second attempt is almost always cleaner, and watching that happen teaches something real about how effort turns into skill.

A note about CMAS at Grade 4

Colorado fourth graders take the CMAS Mathematics assessment — the Colorado Measures of Academic Success — in the spring. It is built on the Colorado Mathematics Standards, which are aligned to the Common Core, so the skills on these worksheets and the skills on the test share the same foundation.

The Grade 4 CMAS asks students to reason as well as calculate. They are expected to compare and round large numbers, perform multi-digit multiplication and division, work with factors, multiples, and prime and composite numbers, compare and add fractions, handle the first decimals, measure and reason about angles, and solve multi-step word problems by choosing the right operation. Because each PDF here targets one standard, you can use the collection as a checklist: spot the shaky skill, work that PDF, and leave the strong skills alone.

Want everything in one bundle?

If a single organized program sounds better than juggling separate files, the bundle pulls everything together.

Colorado CMAS Grade 4 Math Preparation Bundle — practice-test books, full-length practice tests, and complete answer keys with step-by-step explanations.

A short closing

Fourth-grade math covers a lot of ground, but it covers it in order, and a student gets across one skill at a time. Bookmark this page, print one PDF tonight, and let your child start somewhere small. Colorado kids take on big climbs well when the next step is clear — and a worksheet on the table is exactly that kind of clear.