What a 4th grader should know by the end of the year

Fourth graders read to learn: longer chapter books, information texts with harder words, and stories they explain using details and inferences. In math they multiply bigger numbers, divide with remainders, add and subtract with the standard method, and go much further with fractions and decimals.

Checked October 29, 2026 against the sources listed at the end.

The big goal of 4th grade

Math: multi-digit multiplication and division with place-value methods, adding and subtracting multi-digit numbers with the standard algorithm, and working with fractions with different denominators. Reading: using details from the text to explain what it says and what it suggests.

Reading and writing

Reads unfamiliar long words using syllables, roots and prefixes and suffixes.
Explains what a text says and what it suggests, using details and examples from it.
Finds the theme of a story, poem or play, and describes characters, settings and events in depth.
Explains how an information text is organized (in time order, by cause and effect, by problem and solution) and compares firsthand and secondhand accounts.
Writes opinion pieces supported by reasons and information, reports, and stories with clear sequence and detail; does short research projects.
Types well enough by the end of the year to write at least one page in a sitting, and uses words like their/there and to/too/two correctly.

Math

Adds and subtracts multi-digit whole numbers quickly using the standard algorithm.
Multiplies up to four digits by one digit, and two two-digit numbers, using place-value strategies such as area models.
Divides up to four digits by one digit, with remainders, and solves multistep word problems.
Knows factors and multiples, and whether a number up to 100 is prime or composite.
Finds equivalent fractions, compares any two fractions, adds and subtracts fractions with like denominators, and multiplies a fraction by a whole number.
Writes tenths and hundredths as decimals and compares them; measures angles with a protractor; finds area and perimeter of rectangles with formulas.

Science

Energy: how it moves through sound, light, heat and electric currents, and in collisions.
Waves: patterns of waves, and how waves can carry information.
How animals' and plants' structures help them survive, and how senses take in information.
Processes that shape the Earth: weathering, erosion, rock layers, earthquakes and volcanoes.

How to help at home

Make sure multiplication facts are quick; nearly everything in fourth-grade math leans on them.
If homework uses partial products or an area model, ask your child to show you, then compare it with the method you know. They give the same answer.
Talk about fractions in cooking and sharing: is 3/8 of a pizza more or less than 1/2?
Ask your child to back up an answer about a book: "how do you know? show me where it says that".
Practice typing a little each week; fourth-grade writing increasingly happens on a keyboard.

Questions to ask the teacher

Is my child reading fourth-grade texts with understanding, including information texts?
Which multiplication and division methods does the class use, so we use the same words at home?
How is my child with fractions? Do they understand why, or just the steps?
How much writing is typed, and how can we help with keyboarding?

Teachers see your child every day and know what the class is working on this month. Ask first, then practice what they suggest; the two of you pulling the same way is worth more than any workbook.

Where this list comes from

Reading, writing and math come from the Common Core State Standards for 4th grade, put in plain words; we summarize, so read the standards themselves for the exact wording. Science follows the topic list of the Next Generation Science Standards. Social studies has no national standard, so that part describes what many schools teach in 4th grade.

Your state sets what is taught, and states differ. Many use the Common Core State Standards for reading and math, or standards written from them; others wrote their own. Your state's education department posts its standards, and your child's teacher can tell you exactly what the class covers and when.

Questions parents ask

When do children learn long multiplication the old way?

In the Common Core, multiplying multi-digit numbers with the standard algorithm is a fifth-grade goal. Fourth graders multiply with place-value methods such as area models and partial products, which show why the standard method works.

My fourth grader reads well but struggles with homework questions. Why?

Fourth-grade questions ask children to explain and infer, not only recall. Practice by asking how they know an answer and where the book shows it. If it keeps being hard, ask the teacher what they see.

Practice at your child's level

Peabody, our site for children, has free stories and learning games written at each reading level and math grade, with no sign-up. Start where your child is comfortable, not where the calendar says.

Reading level 8: where 4th grade starts What the level reads like, a sample, and the free stories written at it.
4th grade math on Peabody The year's math path, every part open, with games that practice it.
4th grade learning games Reading and math games that play in the browser, three big answers to tap.
Short stories for 4th graders Free stories at the grade's level, to read together or alone.
Start reading on Peabody Peabody asks your child's grade, starts the stories a little under it, and moves the level as books run easy or hard.

Where this comes from

Written for parents, to use alongside your child's teacher, not instead of them. General information only, not professional, medical or legal advice. Checked on October 29, 2026. Something wrong or out of date? Write to hello@peabody.kids.