# Common Core 2nd Grade Math Standards

The Common Core State Standards describe what students in the US should learn by the end of each school year. This article provides parents and caregivers with an overview of the 2nd grade Common Core math standards.

Author

Katie Wickliff

Published:

Oct 2024

## Key takeaways

- • The Common Core was designed to provide uniform expectations for students to increase academic achievement.
- • Common Core 2nd grade math standards cover four main topics: operations and algebraic thinking, number and operations in base 10, measurement and data, and geometry.
- • Although the majority of states implemented Common Core when it was introduced, 2nd grade math standards still differ by state and by school.

In 2010, the government introduced the Common Core State Standards Initiative with the goal of increasing academic achievement and college readiness among all students. The Common Core outlines Mathematics and English/Language arts standards that define what all K-12 students should learn by the end of each school year.

The Common Core attempted to solve two main problems: first, implementing a standards-based education would make it easier to compare students in different states. Prior to the Common Core, each state had a different definition for math and reading proficiency. Secondly, the government hoped that more rigorous standards would improve US student scores globally.

Although the majority of states have adopted and implemented Common Core, a few opted out. Additionally, in the 13 years since the introduction of Common Core, several states have edited or repealed the initiative. Academic institutions that do not receive government funding—such as independent and parochial schools—are also not mandated to follow Common Core, regardless of their state. This means that academic standards can still vary widely.

Navigating the Common Core as a parent or caregiver can be confusing, and we’re here to help. In this article, we break down each component of common core math for 2nd graders and provide helpful ways for you to practice math at home with your child.

## Table of contents

## 2nd Grade Math Common Core Standards

The common core math standards in grade 2 address four main topics: operations and algebraic thinking, number and operations in base 10, measurement and data, and geometry.

### Operations and Algebraic Thinking

Second grade math students learn how to use addition and subtraction to solve one or two-step word problems. Using pictorial representations and other strategies, second grade students begin to understand the relationship between addition and subtraction. By the end of the year, 2nd grade students will be able to add and subtract within 20 using mental math strategies.

They’ll also memorize the sums of two one-digit numbers. Students begin to establish a foundation for multiplication by working with equal groups of objects and using strategies to determine whether a group has an odd or even number.

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### Number and Operations in Base 10

Base 10 is the foundation of our number system. In a Base 10 number system, ten digits ranging from 0-9 are used to represent any number’s value, depending on their position within the numeral. Second grade students learn place value and how each place in a three-digit number represents hundreds, tens, and ones. For instance, 367 indicates 3 hundreds, 60 tens, and 7 ones.

Additionally, 2nd graders learn to count up to 1000 as well as skip-count by 5s, 10s, and 100s. They also learn how to read and write numbers up to 1000 using numerals, names, and expanded forms, and use mental math to add or subtract 10 or 100 from any given number.

### Measurement and Data

In 2nd grade math, students learn to measure, estimate, and compare an object’s length using various tools, such as a ruler, yardstick, or tape measure.

Second graders also learn to write and tell time to the nearest five minutes on both analog and digital clocks, using a.m. and p.m.

Students solve word problems involving how to count money andthe worth of dollar bills, quarters, dimes, nickels, and pennies. Second graders represent measurement and data results on a line or bar graph.

### Geometry

In 2nd grade geometry, students recognize and can draw various shapes, such as rectangles, circles, triangles, and pentagons. Students understand that shapes have different attributes, such as a square having four equal sides or a triangle having three angles. Second graders learn to partition shapes and describe the parts using the words halves, thirds, quarters, or fourths.

## How do 2nd Grade Math Standards Vary by State?

While the Common Core aims to provide students with uniform learning goals, state-specific math standards still vary. When Common Core was introduced in 2010, 40 states adopted and implemented the program immediately, with five states joining in over the next two years.

Although most of the country adopted Common Core quickly, Minnesota took Common Core’s English and Language Arts standards but not Mathematics. Four states—Virginia, Alaska, Nebraska, and Texas— never adopted the initiative–instead opting to remain with local and state-developed standards systems.

As of 2023, of the 45 states that initially adopted the standards, 24 have repealed the initiative or revised certain portions. Arizona, Oklahoma, Indiana, and South Carolina have now entirely withdrawn from the program.

States that do not follow the Common Core still must show that they have established “challenging” academic standards for their K-12 students. For example, the Texas Essential Knowledge and Skills (TEKS) are the set of state-mandanted standards for all students who reside in Texas and attend public schools. Similar to the Common Core, the main goal of TEKS is to determine what concepts and skills students should know by the end of each school year.

## What Should Kids Know in Math by the End of 2nd Grade?

If your child’s school follows the Common Core, it is important to understand the learning goals outlined in the 2nd grade math standards. However, since many states and schools have different academic expectations, the most important way to advocate for your child’s education is by establishing consistent communication with their teacher. Your child’s teacher should be able to provide valuable insight into your child’s individual progress, in addition to the school or state’s overall 2nd grade academic standards.

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## Where Can You Practice 2nd Grade Math Concepts?

Practicing math concepts at home will help your child develop the skills and confidence necessary for academic success. Whether your child’s school follows 2nd grade common core math or another set of standards, DreamBox’s engaging math app is packed with interactive games and sample problems that make math practice fun. Other ways to provide 2nd grade math help include looking for real-world math problems throughout the day, playing math card games, or searching for free “Common Core Math Standards Grade 2” worksheets.

## FAQs About 2nd Grade Math Standards

Depending on school or state standards, 2nd graders should learn important math concepts involving addition and subtraction, place value, measurement, and geometry.

The 2nd grade math common core standards are operations and algebraic thinking, number and operations in base 10, measurement and data, and geometry.

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