Idaho ISAT Grade 4 Math Free Worksheets: 72 Free PDF Worksheets, One Skill at a Time

Somewhere in fourth grade, math quietly changes shape. The numbers get longer — three and four digits where there used to be two. Division stops dividing evenly, and a remainder shows up that a student now has to interpret. Fractions become quantities you actually do things with: compare them, add them, even multiply one by a whole number. Decimals make their first appearance. It is not that the math gets harder all at once; it is that it gets bigger and more connected, all at the same time.

That is exactly why fourth grade is a foundational year. Multiplicative comparison feeds into the multi-step word problems that fill the curriculum. Factors and multiples set up the fraction work to come. A student in Boise or Idaho Falls who gets steady with place value in the fall is laying track for the decimal work that arrives in spring. The skills are linked, which is precisely why a regular rhythm of practice matters more in fourth grade than it did before.

These 43 worksheets are built for that rhythm. From Meridian to Nampa, each one isolates one skill so you can see clearly how it is going.

What’s on this page

Here you will find 43 single-skill PDFs, each aligned to the Idaho Mathematics Standards at Grade 4. Every file is built around exactly one skill and stays there. A worksheet on division with remainders is only about division with remainders; a worksheet on line plots will not slip in a fraction-comparison question. That deliberate narrowness is what makes these so useful — each PDF gives you a clean answer about whether a skill has stuck.

The layout never changes, so a child always knows the territory. Each PDF opens with a one-page Quick Review that explains the skill in plain words and works one example all the way through. Twenty practice problems come next, ordered to build from easy to harder. Then four word problems put the skill into a situation a fourth grader can picture. The final page is a student-facing answer key — not just answers, but short, friendly explanations a student can read alone and actually 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

Keep each session short enough to finish. For a nine- or ten-year-old, fifteen minutes is a real and respectable amount of math. One PDF is one sitting — start it, finish it, set it down. That clean stopping point matters; a child who knows the work has a definite end is far more willing to start it.

Lean on natural pairs. Two related skills done back to back let the second one ride on the first. “Adding Multi-Digit Whole Numbers” and then “Subtracting Multi-Digit Whole Numbers” is a clean pairing. “Equivalent Fractions” right before “Comparing Fractions” works well, because finding a common form is most of what comparing takes. “Area of Rectangles” next to “Perimeter of Rectangles” helps a child stop confusing the two, which is the single most common mix-up of the year.

Idaho families have full evenings, and the school year is long — practice has to fit into ordinary nights. Print one PDF the night before so it is ready and waiting. Keep the answer key aside until the work is done, then let your child check their own page. That last step, reading why a right answer is right, is where the worksheet earns its keep.

When a page goes badly, treat it as useful news rather than a setback. A rough worksheet points straight at the one skill that needs another pass — and the fix is usually small: sit down together, work the Quick Review example slowly, and let your child try the practice problems again the next day. Fourth graders recover quickly when the reset feels calm and matter-of-fact instead of discouraging.

A note about ISAT at Grade 4

Idaho students take the Idaho Standards Achievement Test — Mathematics, known as the ISAT, in the spring. It is built on the Idaho Mathematics Standards, which are Common Core-aligned. Because these worksheets come from the same standards, the skills your child practices here match the skills the ISAT is checking.

At Grade 4, the ISAT expects students to multiply and divide multi-digit numbers, reason about fractions and decimals, solve multi-step word problems, and handle measurement, angle, and geometry questions. Since every PDF on this page targets a single Idaho standard, you can use the spring window as a checklist — work through the skills, note which ones come easily and which do not, and spend your practice time only where it is genuinely needed.

A short closing

Fourth-grade math covers real ground, but it covers it one skill at a time, and a child can travel it the same way. Bookmark this page, print one PDF tonight, and let your student begin small — a single set of multiplication problems is a perfectly good start. Idaho kids handle hard work when the next step is clear, and a worksheet on the table is about as clear as a next step gets.

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