Montana MAST Grade 4 Math Free Worksheets: Free Printable PDF Worksheets with Full Solutions

There is a moment in fourth grade when a child looks at a math problem and realizes it will not be finished in a single line. That moment is the whole year in miniature. Numbers now stretch into the hundred-thousands and have to be read, rounded, and compared. Multiplication becomes a multi-step procedure. Division produces remainders that mean something and have to be interpreted. Word problems ask for a plan before they ask for an answer. Math has become something a student builds, not just something they recall.

Fractions are a big part of that shift. They move from a slice of something into genuine numbers — ones a child has to find equivalents for, compare, and add and subtract when the denominators agree. Mixed numbers appear, and so does multiplying a fraction by a whole number. Decimals to the hundredths arrive, and a student starts to see how a decimal and a fraction can describe the exact same amount. Angles, area and perimeter, and line plots round out the year, along with multi-step word problems that reward a child who plans before reaching for the numbers. It is a full, foundational year, and it rewards patience.

These worksheets were designed for patient, one-skill-at-a-time work. Whether your fourth grader is in Billings, Missoula, Great Falls, or Bozeman, each PDF takes a single skill and gives it the space to settle in.

What’s on this page

There are 43 single-skill PDFs on this page, each aligned to the Montana Mathematics Standards at Grade 4. Every file holds to exactly one skill, so a student practicing division with remainders is not also being quizzed on angle types, and a student on equivalent fractions is not pulled sideways into decimal place value.

Each PDF begins with a one-page Quick Review that lays out the skill in plain words and works through an example start to finish. Then come 20 practice problems that rise gently from easy to harder, followed by 4 word problems that set the skill in a real context. The closing page is a student-facing answer key, written so a fourth grader can check their own work and trace exactly where an answer went off course.

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

Short and steady is the rule. Fifteen minutes is the right length for a nine- or ten-year-old, and a calm quarter hour beats a long, frustrated stretch every single time. Choose one PDF, sit nearby, and let your child work while you stay available for the stuck moments.

It helps a great deal to run related skills back to back, so each one reinforces the last. Try “Multiplying by One-Digit Numbers” and then “Multiplying by Two-Digit Numbers” — the second is a clear extension of the first. The same works for “Equivalent Fractions” before “Comparing Fractions,” or “Area of Rectangles” right before “Perimeter of Rectangles.” When skills come in pairs, the link between them teaches almost on its own.

Keep the answer key set aside until the work is finished, then walk through it together. In a house in Missoula or a classroom in Bozeman, that review is where the learning takes hold — not in a flawless first attempt, but in seeing clearly why a method gives the right result. Have your child talk one problem through out loud; explaining a step is how it becomes theirs.

There is no need to rush the stack. Some weeks one PDF is the whole of what you will get to, and that is genuinely fine. At nine and ten, steady wins. A child who reaches spring with a solid grip on place value, multi-digit multiplication, and the foundations of fractions is far better set up than one who hurried through every page without the ideas settling in.

A note about MAST at Grade 4

Montana fourth graders take the MAST — the Montana Aligned to Standards Through-year assessment — in Mathematics. Rather than a single spring sitting, MAST is given across three through-year windows in fall, winter, and spring, so it checks in on student progress more than once. It is built on the Montana Mathematics Standards, which are aligned to the Common Core, meaning the skills on these worksheets and the skills on the assessment come from the same place.

At Grade 4, MAST asks students to round and compare large numbers, carry out multi-digit multiplication and division, reason about factors and multiples, compare and combine fractions, work with decimals to the hundredths, and solve multi-step word problems that require choosing an operation. Because each PDF here targets one standard, and because MAST checks in across the year, the list works beautifully as a running checklist — after each window, you can see exactly which skills need another pass and work just those.

Want everything in one bundle?

If you would rather have one organized program than a stack of separate files, the bundle brings it all together.

Montana MAST 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 grows fast, but it grows in order, each skill leaning on the one before it. Bookmark this page, print a single PDF tonight, and let your child start somewhere small. Montana kids handle big new things well when the next step is clear — and a worksheet on the kitchen table is about as clear as a next step gets.