North Dakota NDSA Grade 4 Math Free Worksheets: Free Printable Grade 4 Math PDFs, No Signup

Fourth grade is the year a child’s math vocabulary grows up. Words like factor, multiple, equivalent, remainder, and hundredths arrive all at once, and behind each one is a real idea a student has to build, not just memorize. The arithmetic gets bigger too — three-digit numbers multiplied by one-digit numbers, four-digit numbers divided down to a quotient and a remainder. It is, quietly, one of the most important years in elementary math, because so much of what comes later rests on it.

A North Dakota fourth grader will work through place value into the large numbers, multi-digit multiplication and division, factors and multiples, and number patterns. Fractions become serious business — equivalence, comparing, adding and subtracting with like denominators, mixed numbers, and multiplying a fraction by a whole number. Decimals to the hundredths show up for the first time. So do unit conversions, area and perimeter, line plots, and the measuring of angles. Each piece is reachable on its own; the challenge is that they keep coming.

Whether the school day starts in Fargo or in a smaller district near Minot, the dependable path through is the same — take one skill, practice it until it feels easy, then take the next. These worksheets are designed to make that path simple to follow.

What’s on this page

Here you will find 43 single-skill PDFs, each aligned to the North Dakota Mathematics Standards at Grade 4. Every file is built around one skill and nothing else. A worksheet on adding fractions stays on adding fractions; a page on angle measurement does not slip in a multiplication problem. That tight focus is what lets a child finish a page and feel genuinely done.

Each PDF begins with a one-page Quick Review — the skill explained simply, with a single example carried through from start to finish. After that come 20 practice problems that climb from easy to hard, then 4 word problems that set the skill in a context a fourth grader can picture. The final page is a student-facing answer key with short, warm explanations a nine- or ten-year-old can read independently and actually absorb.

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

Keep each sitting short and the rhythm regular. Fifteen minutes a few times a week beats a long Saturday session every time — fourth graders do their best thinking in small, finishable stretches, not in marathons.

Pairing skills that lean on each other makes the work feel connected. Do “Adding Multi-Digit Whole Numbers” and then “Subtracting Multi-Digit Whole Numbers,” and the second page feels familiar before your child even starts. “Equivalent Fractions” followed by “Comparing Fractions” works the same way, because renaming a fraction is the move that makes comparing two of them straightforward. “Area of Rectangles” and “Perimeter of Rectangles” side by side help a child feel, clearly, how the two measurements differ. There is no need to rush the order, either — if a topic is still wobbly, spend a second day on a related page rather than marching ahead. The goal is a skill that feels owned, not a stack of pages checked off.

Wherever home is — Bismarck, Grand Forks, a quiet road outside town — the single most valuable habit is letting your child check their own work with the answer key once the problems are finished. Reading the explanation behind each answer is where the real learning lands. Stay nearby, keep things low-pressure, and let the key carry part of the load. A child who learns to catch and fix their own mistakes is building something far more useful than a perfect score: the habit of checking their own thinking.

A note about NDSA at Grade 4

North Dakota students take the North Dakota State Assessment in Mathematics in the spring. It is built on the North Dakota Mathematics Standards, so the skills on these worksheets and the skills the test measures come from one shared source.

The Grade 4 NDSA asks for more than quick recall. Students are expected to multiply and divide multi-digit numbers, reason carefully with fractions, solve multi-step word problems, and show the thinking that got them to an answer. Since each PDF here targets one standard, the spring testing window turns into a checklist: move through the skills, spot the shaky ones — maybe division with remainders, maybe fraction comparison — and aim your practice precisely there.

A short closing

Fourth-grade math covers a lot, but it is the kind of ground a child crosses one steady step at a time. Bookmark this page, print a single PDF tonight, and let your fourth grader start small. North Dakota kids do hard things well when the next step is clear — and a worksheet waiting on the table makes it about as clear as it can be.

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