Khan Academy
Khan Academy: Negative Numbers, Variables, Number Line
Practice comparing positive and negative numbers by thinking about their positions on the number line. Numbers to the right are greater than numbers to the left. Students receive immediate feedback and have the opportunity to try...
Khan Academy
Khan Academy: Substitution With Negative Numbers
Practice plugging in values to evaluate negative number addition and subtraction expressions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Understand Subtraction as Adding the Opposite
Practice rewriting subtraction problems as equivalent addition problems. For example, 2-9=2+(-9). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Ordering Negative Number Expressions
Practice solving challenging negative number addition and subtraction problems. Number line models, variables, and absolute value come together to push your knowledge of negative numbers even deeper (maybe even below zero!). Students...
CK-12 Foundation
Ck 12: Algebra: Additive Inverses and Absolute Values
[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn about additive inverses and absolute values.
Help Algebra
Help algebra.com: The Real Number System
Natural numbers, whole numbers, integers and rational numbers begin this lesson on the real number system. You can also learn more about the number line and absolute value. Examples and diagrams are included to enhance understanding.
Math Planet
Math Planet: Algebra 1: Integers and Rational Numbers
Provides an example and a video lesson that illustrates integers and rational numbers.
Cool Math
Coolmath: Finding the Absolute Value of a Number
Finding the Absolute Value of a Number. its distance from zero on the number line.
Khan Academy
Khan Academy: Addition & Subtraction: Find the Missing Value
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.
Khan Academy
Khan Academy: Number Equations & Number Lines
Practice writing addition and subtraction equations to match number line diagrams. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Interpreting Negative Number Statements
Practice matching addition and subtraction equations to real-world scenarios. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Cool Math
Coolmath: Absolute Value Equations
This Algebra Cruncher generates an endless number of practice problems for absolute values equations with solutions and hints!
Khan Academy
Khan Academy: Subtracting Negative Numbers
Practice subtracting positive and negative single-digit numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Absolute Value to Find Distance
Practice taking the absolute value of the difference of two numbers to find the distance between those numbers. Apply this principle to solve word problems. Students receive immediate feedback and have the opportunity to try questions...
Math Open Reference
Math Open Reference: Number Line
Interactive number line illustrates how as you move to the right the numbers increase and as you move to the left the numbers get more negative.
Khan Academy
Khan Academy: Absolute Value to Find Distance Challenge
Practice using absolute value to find distance.
Khan Academy
Khan Academy: Adding & Subtracting Rational Numbers
Practice adding and subtracting rational numbers of different forms.
Khan Academy
Khan Academy: Absolute Value to Find Distance Challenge
Solve conceptually challenging absolute value problems. In order to succeed at these problems, you'll need to remember that the absolute value of the difference of two numbers is the distance between those numbers. Students receive...
CK-12 Foundation
Ck 12: Arithmetic: Absolute Value of Integers
[Free Registration/Login may be required to access all resource tools.] Find the absolute value of positive and negative integers.
CK-12 Foundation
Ck 12: Arithmetic: Sums of Integers on a Number Line
[Free Registration/Login may be required to access all resource tools.] In this lesson students find sums of integers by using a number line. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Arithmetic: Subtraction of Rational Numbers
[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn how to subtract rational numbers. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Other
Msjc: Lesson: The Opposite and the Reciprocal Assignment: The Opposite
Explore opposites and reciprocals through positive and negative numbers and fractions.
Alabama Learning Exchange
Alex: Those Number Aren't Just Moody.
Rational numbers can sometimes cause problems when they're converted to repeating decimals. That, we can handle. But, what about those irrational numbers that can only be "sort of, like approximated"? How can we expect middle schoolers...
Cool Math
Coolmath: Subtraction of Signed Numbers
Reference material and practice with integer subtraction.