By the end of this section, you will be able to apply principles of vector addition to determine relative velocity and explain the significance of the observer in the measurement of velocity.

In this exercise, students practice addition using groups of 10 and 100. Students receive immediate feedback and have the opportunity to get hints, watch a video tutorial, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2...

Download these worksheets to sharpen your addition skills. Sheets focus on single and multi-digit addition, addition table, column addition, and adding doubles of numbers.

In this exercise, students practice addition within 1000. Students receive immediate feedback and have the opportunity to get hints, watch a video tutorial, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...

Sing a song, practice step by step and assess your knowledge on the properties of addition with this interactive lesson.

[Free Registration/Login may be required to access all resource tools.] A video [0:56] and practice questions where students find a missing number in addition sentences with sums to 1000.

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.

In this exercise, students practice addition within 100. Students receive immediate feedback and have the opportunity to watch a tutorial video get hints, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...

[Free Registration/Login may be required to access all resource tools.] The video lesson explains the relationship between repeated addition and multiplication. The video is followed by a series of practice questions to assess student...

A customizable addition quiz where you can choose what numbers to cover, from 10 to 30 questions, and how much time students can have to answer. The quiz can also be printed for use as a worksheet.

Practice breaking apart big addition problems using place value. For example, 234+567 is the same as 200+500+30+60+4+7. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...

[Free Registration/Login may be required to access all resource tools.] The video shows how to break down a word problem into two steps to solve an addition problem with numbers up to 100. The video is followed by a series of practice...

Multi-digit addition basketball game.

[Free Registration/Login may be required to access all resource tools.] A video and practice questions on adding 3-digit numbers with regrouping. [1:32]

Solve problems step by step by addition with regrouping.

Practice working through addition and subtraction problems using the number line. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice addition word problems within 10. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice addition and subtraction word problems 1. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice breaking apart two-digit addition problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Blast alien invaders to practice your addition!

This resource has three problem sets to practice addition using associtaive and commutative property of addition. Select a problem set, then select a question. Fill in the blank with the correct answer for each problem. When you have...

Math practice exercise on repeated addition with multiplication.

[Free Registration/Login may be required to access all resource tools.] A video and practice questions with sums to 1000 where students determine which addition sentence matches the given sum. [1:07]

Solve word problems with addition and subtraction without regrouping. Then test your knowledge.