What a 3rd grader should know by the end of the year

Third grade is a turning point. Reading shifts toward understanding longer books and information texts, and writing grows into paragraphs. In math, multiplication and division arrive, children learn the times tables by heart, and fractions begin. In many states it's also the first year of state tests.

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

The big goal of 3rd grade

Math: knowing all products of two one-digit numbers from memory by the end of the year, and understanding fractions as numbers. Reading: reading fluently enough to learn from what they read, and explaining what a text says using details from it.

Reading and writing

Reads multisyllable words, and knows common prefixes and suffixes and what they mean (re-, un-, -ful, -less).
Reads third-grade books accurately, at a good pace and with expression.
Asks and answers questions about a text and points to the part that gives the answer.
Finds the lesson or moral of fables and folktales, and describes characters' traits, motives and feelings.
Finds the main idea of an information text and the details that support it, and uses headings and search tools.
Writes opinion pieces with reasons, informative pieces with facts and definitions, and stories with dialogue; plans, revises and edits with help.

Math

Understands multiplication as equal groups (5 × 7 is 5 groups of 7) and division as sharing or grouping.
Multiplies and divides within 100 quickly, and knows all products of two one-digit numbers from memory by the end of the year.
Solves two-step word problems with all four operations, and rounds numbers to the nearest 10 or 100.
Adds and subtracts within 1,000 quickly, and multiplies one-digit numbers by multiples of 10 (9 × 80).
Understands fractions as numbers: unit fractions like ¼, fractions on a number line, simple equivalent fractions, and comparing fractions with the same top or bottom number.
Finds area by counting square units and by multiplying, finds perimeter, tells time to the minute, and measures liquids and masses.

Science

Forces and interactions: balanced and unbalanced forces, patterns of motion, and magnets.
Life cycles and traits: how organisms grow and change, and how traits are inherited or affected by surroundings.
How changes in an environment affect the plants and animals that live there, and fossils as clues to the past.
Weather and climate: recording weather, climate in different regions, and designs that reduce weather hazards.

How to help at home

Times tables: a few minutes a day, a few facts at a time. Start with 2s, 5s and 10s, then the rest. A multiplication chart helps your child see the patterns.
If homework shows an area model or arrays, let your child explain it; it's how multiplication is taught before the standard method.
Use fraction strips or a folded strip of paper to show that 2/4 and 1/2 are the same amount.
Ask your child to read to you and then tell you what they learned, in their own words, before you ask any questions.
Find out from the teacher when the state test is and what it covers; our state tests explained page says what the scores mean.

Questions to ask the teacher

Is my child reading fluently enough to understand third-grade books? What should we do at home?
How are the times tables going, and which facts should we practice?
Does my child understand fractions, or just follow the steps?
When are the state tests, and how will I get the results?

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 3rd 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 3rd 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

Should my third grader know the times tables by heart?

Yes, that's the third-grade goal in the Common Core: know all products of two one-digit numbers from memory by the end of the year. Most children get there with a few minutes of practice most days.

Why is third grade such a big year?

Federal law requires state reading and math tests every year in grades 3 to 8, so third grade is the first test year for most children. Reading also shifts toward learning from books, so a child who still finds decoding hard needs help now. Talk to the teacher early if reading is a struggle.

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 7: where 3rd grade starts What the level reads like, a sample, and the free stories written at it.
3rd grade math on Peabody The year's math path, every part open, with games that practice it.
3rd grade learning games Reading and math games that play in the browser, three big answers to tap.
Short stories for 3rd 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.