Alabama ACAP Grade 4 Math Free Worksheets: 72 Printable PDFs with Step-by-Step Answer Keys

Somewhere around fourth grade, the numbers stop being small. A third grader is comfortable in the hundreds; a fourth grader is suddenly asked to read, compare, round, and add numbers in the hundred-thousands and beyond. Multiplication grows from a memorized fact into a two-step, then three-step procedure. Division now leaves remainders that mean something. And fractions — which used to be a slice of pizza — turn into a real number system with its own rules for comparing and combining.

That is a lot of new ground in one school year, and it can feel that way to a nine-year-old. The good news is that none of it arrives all at once. Fourth-grade math is built skill by skill, and a student who gets steady, focused practice on each piece tends to find that the big ideas hold together by spring.

It also helps to remember that fourth grade is a foundational year, not just a busy one. The multiplication a student practices now is the same multiplication that powers fractions, area, and the multi-step problems waiting in fifth grade. The fraction work is the groundwork for decimals, ratios, and everything algebra will eventually ask. Time spent getting these skills solid is not time spent on this year alone — it is time invested in every math year that follows.

These worksheets were made for that kind of patient, piece-by-piece work. Whether your fourth grader is in Birmingham, Montgomery, Mobile, or Huntsville, they offer one clear skill at a time — enough practice to build confidence, not so much that it becomes a chore.

What’s on this page

You will find 43 single-skill PDFs, each aligned to the Alabama Mathematics Standards at Grade 4. Every file holds to exactly one skill, so a student practicing multi-digit multiplication is not also being quizzed on angles, and a student working on equivalent fractions is not pulled sideways into line plots.

Each PDF begins with a one-page Quick Review that explains the skill in plain words and walks through a worked example. Then come 20 practice problems that climb gently from easy to harder, followed by 4 word problems that put the skill into a real situation. The last page is a student-facing answer key — written so a fourth grader can check their own work and actually understand where a wrong answer went off track.

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 most useful thing you can do is keep the sessions short. Fifteen minutes is plenty for a nine- or ten-year-old, and a calm fifteen minutes beats a frustrated forty-five every time. Pick one PDF, sit nearby, and let your child do the work while you stay available for the stuck moments.

It helps to run related skills back to back so each one reinforces the last. Try “Adding Multi-Digit Whole Numbers” one afternoon and “Subtracting Multi-Digit Whole Numbers” the next — the second feels familiar instead of brand new. The same pairing works for “Equivalent Fractions” followed by “Comparing Fractions,” or “Area of Rectangles” right before “Perimeter of Rectangles.” When skills travel in pairs, the connections do the teaching for you.

Save the answer key for after the work is finished, then go through it together. In a house in Mobile or a classroom in Huntsville, that review step is where the real learning lands — not in getting every problem right the first time, but in seeing clearly why an answer works.

One more thing worth doing: when a worksheet goes badly, treat it as information rather than a verdict. A messy page on long division usually means one specific step — estimating, or bringing down the next digit — needs another look, not that division as a whole is broken. The single-skill format makes that easy to spot. You can hand your child the same PDF again a few days later, and the second pass almost always goes better, which is its own quiet lesson about how learning actually works.

A note about ACAP at Grade 4

Alabama fourth graders take the ACAP Summative Mathematics assessment in the spring. It is built on the Alabama Mathematics Standards, which are aligned to the Common Core — so the skills practiced on these worksheets and the skills measured on the test come from the same place.

The Grade 4 ACAP asks students to do more than recall facts. It expects them to round and compare large numbers, carry out multi-digit multiplication and division, reason about factors and multiples, compare and combine fractions, work with the first decimals, and solve multi-step word problems that require choosing the right operation. Because each PDF here targets a single standard, you can treat the list as a checklist: if your child is shaky on a particular skill, you can see it and work just that one, rather than reviewing everything.

A short closing

Fourth-grade math grows fast, but it grows in order — one skill leaning on the one before it. Bookmark this page, print a single PDF tonight, and let your child start somewhere small. Alabama 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.

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