What a 2nd grader should know by the end of the year

Second grade builds speed and confidence. Children read longer books with vowel teams, prefixes and suffixes, and answer who, what, where, when, why and how. In math they learn their addition facts by heart, work with numbers to 1,000, and add and subtract two-digit numbers.

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

The big goal of 2nd grade

Reading: decoding longer words smoothly enough that attention goes to meaning. Math: knowing every sum of two one-digit numbers from memory by the end of the year, and adding and subtracting within 100 using place value.

Reading and writing

Reads words with more vowel teams (ee, oa, oi), two-syllable words with long vowels, and words with common prefixes and suffixes.
Reads second-grade books accurately and with expression, and rereads to fix mistakes.
Answers who, what, where, when, why and how questions about stories and information books.
Retells fables and folktales and tells their lesson, and describes how characters respond to events.
Uses text features in information books: captions, bold words, headings, glossaries and indexes.
Writes opinions with reasons, short reports and stories, then revises and edits with help; uses apostrophes in contractions (can't) and possessives (the dog's).

Math

Adds and subtracts within 20 quickly using mental strategies, and knows all sums of two one-digit numbers from memory by the end of the year.
Adds and subtracts within 100 using place value, and solves one- and two-step word problems.
Understands three-digit numbers as hundreds, tens and ones, and reads, writes, compares and skip-counts by 5s, 10s and 100s to 1,000.
Adds and subtracts within 1,000 with models and drawings, and adds 10 or 100 in their head.
Measures length in inches, feet, centimeters and meters, tells time to five minutes with a.m. and p.m., and solves problems with coins and dollar bills.
Builds arrays up to 5 by 5 and writes them as repeated addition (the start of multiplication), and splits shapes into halves, thirds and fourths.

Science

Materials and their properties: sorting by what things are made of, and how heating or cooling changes some materials.
Plants, animals and habitats: what plants need to grow, and how animals spread seeds and pollen.
How wind and water shape the land, slowly or quickly, and ways people slow that change.
Simple engineering: designing, testing and comparing solutions.

How to help at home

Practice addition facts a few minutes a day until they come without counting: dice games, flash cards, or the free games on Peabody linked below.
When homework uses an open number line or number bonds, ask your child to teach you the method. Explaining it is good practice.
Count coins and make change at the shop, and read clocks to five minutes.
After reading, ask one "why" question: why did the character do that? Find the sentence that shows it.
Keep reading aloud harder books than your child can read alone; it builds the words they'll need later.

Questions to ask the teacher

How does my child's reading compare with where you'd expect them now? Is it accuracy, speed or understanding we should work on?
Does my child know addition facts to 20 by heart yet?
Which strategies does the class use for two-digit adding and subtracting, so we can use the same ones at home?
Is there a spelling list or pattern each week we can practice?

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 2nd 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 2nd 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

Why doesn't my child carry the one the way I learned?

Second graders add and subtract with methods based on place value first, like number lines and breaking numbers into tens and ones. The standard method you learned arrives in fourth grade for multi-digit numbers. Our standard algorithm page explains how the methods connect.

What reading level should a second grader be at?

The standards describe what second graders read, not one number. Schools use different level systems, so ask the teacher which one they use and where your child is on it.

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 5: where 2nd grade starts What the level reads like, a sample, and the free stories written at it.
2nd grade math on Peabody The year's math path, every part open, with games that practice it.
2nd grade learning games Reading and math games that play in the browser, three big answers to tap.
Short stories for 2nd 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.