Khan Academy: Addition & Subtraction: Find the Missing Value (Part 1 of 2)

A video describes solving a simple absolute value equation.

Sal solves more missing value problems: 4 = -8 - __ and __ - (-2) = -7 and -4 = __ - 9.

Practice finding the missing value in an addition or subtraction equation involving negative numbers.

Practice finding the missing value in an addition or subtraction equation involving negative numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice addition and subtraction word problems 2. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Practice solving addition and subtraction problems with integers (positive and negative numbers). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice solving addition and subtraction problems with integers (positive and negative numbers).

This video explains place value in decimal numbers. Practice problems are available. [4:00]

There are no negatives in learning about negative numbers. Scholars review how to add and subtract integers by watching a short video. They first see how to use a number line to determine the sum or difference, then learn to apply...

Practice solving equations in one step by adding or subtracting the same value from both sides. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.