In this subtraction instructional activity, students problem solve twenty five subtraction equations involving decimals. Students show each step of their work as they go.
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Integers: Addition and Subtraction
Young mathematicians construct their own understanding of integers with an inquiry-based math lesson. Using colored chips to represent positive and negative numbers, children model a series of addition and subtraction problems as they...
5th - 8th Math CCSS: Adaptable
Integer Addition and Subtraction Word Problems
Middle schoolers are prompted to solve six word problems, involving the addition and subtraction of integers. This worksheet contains real-world applications, including finding temperature changes. Invite your students to try solving the...
6th - 8th Math
Understanding Subtraction of Integers and Other Rational Numbers
Subtraction is all about opposites and the fifth lesson in a series of 25 introduces the concept of subtracting integers. Pupils connect subtracting with discarding a card in the integer game. They develop the rule for subtracting...
7th Math CCSS: Designed
Sum and Difference Angle Formulas
Need practice deriving trigonometric angle formulas? With this learning exercise, pupils derive the sum and difference formulas for cosine and tangent and the difference formula for sine. Scholars use the sine sum formula and other known...
9th - 12th Math CCSS: Designed
How Do You Know if You Have a Difference of Squares?
What are the characteristics of a polynomial that would make it factorable by the difference of squares rule? There are four must haves: two terms, coefficients are perfect squares, minus sign, degree of each term is even or zero. If it...
2 mins 8th - 11th Math
How Do You Factor a Common Factor Out Of a Difference of Squares?
How do you know that a binomial can be factored using the difference of squares? First try finding the greatest common factor and pulling that out. Then take a look at what is left. Are the coefficients perfect squares? Then it could be...
4 mins 8th - 9th Math
How Do You Factor a Polynomial Using Difference of Cubes?
What is the difference of a cube? When is it used? How does it work? Use it to factor a binomial involving subtraction. Rewrite the terms as a cubed expression. Then apply the difference of cubes formula. Don't forget to simplify. Still...
5 mins 8th - 11th Math
How Do You Figure Out What Factoring Strategy to Use?
Greatest common factor, grouping terms, binomials, difference of squares, sum or difference of cubes, are some of the factoring strategies that can be used. Sometimes it takes more than one of these methods to solve a problem. Hear the...
2 mins 8th - 9th Math