Virtual Nerd
Virtual Nerd: Recognize Opposite Signs of Numbers
Use the number line to recognize the opposite of a number.
Khan Academy
Khan Academy: Negative Number Addition and Subtraction: Word Problems
Practice solving word problems with negative numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Signs of Sums
Practice determining whether the sum of two numbers is positive, negative, or zero. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Integers: Negative Numbers: Number Opposites
Students take a quiz over the concept of integer opposites, also known as additive inverses. After answering each question they are given feedback. Hints are available but affect the score. If students are still struggling with the...
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Opposites
Find a quick, concise explanation of the property of opposites. Several examples are given and clearly explained.