Groups of 4 to 5 students follow teacher prompts to enter one part of a number (ex: 6 thousands), and then the next student adds the next part until the entire number is built, one digit at a time. Self-checking!

Practice your two-digit place value skills here. Just press the "go" button and find the number on the right that is represented by the base ten blocks on the left.

Students learn to add using place-value material and a calculator. They make connections between base-ten numerals and the quantities they represent.

[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to solve word problems involving different-sized sets of the same item. Includes video demonstrating a sample problem...

Shark Numbers is a mobile-friendly place value game. The learning objective of this game is to know what each digit in a 3-digit number represents, (for ages 5-8).

Fact Monster: Decimals is a learning module that focuses on digit placement. It also provides videos on how to add and subtract decimals and how to multiply and divide decimals.

Practice solving word problems with addition and subtraction. These questions are comparison problems including difference unknown, smaller value unknown, and bigger value unknown. Numbers used are 100 or less.

Practice solving word problems with addition and subtraction. These questions are start unknown problems including add to and take from problems. Numbers used are 100 or less.

[Free Registration/Login may be required to access all resource tools.] A video and practice questions on how to subtract decimal numbers from the tens place to the thousandths decimal place. [0:47]

This lesson explains how to add decimals of the tenths place value. Gives practice and games to work on this skill.

Practice adding and subtracting numbers like 54 and 37 using a number line. Numbers used in these problems are all less than 100.

Practice solving problems like 24 + 45.

Practice solving problems like 34+1 and 34+10.

Add two numbers that are either whole numbers or written to the tenths place value. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Generate worksheets for math problems ranging from simple addition problems to place value with expanded notation for free. Your choice of font, font size, color and landscape when printing.

A set of seven short tutorials on addition. Begins with a basic introduction to how addition works, and covers topics such as using a number line, place value, and regrouping.

Practice adding two-digit numbers. All numbers in these problems are 100 or less.

Practice adding and subtracting to solve word problems. These questions are result unknown or change unknown problems. Numbers used are 100 or less.

Practice adding and subtracting using the number line. Numbers used are 100 or less.

Practice solving problems like 34+5 and 34+50.

This website explains and defines adding whole numbers and decimals. Content explores addition with regrouping and how to align numbers in a written calculation. There are even practice problems at the end of the lesson.

Young scholars learn to add and subtract numbers Using the calculator. They investigate patterns in place value and explore relationships between numbers on the hundred chart.

Using base-ten materials and place-value skills, 2nd graders gain a better understanding of how to add and subtract numbers.

See how many people you can rescue. Click the number of tens and ones you need to move down the number line to the rescue. When you get there click the life preserver and then watch your rescue numbers add up.