In this pre-algebra/grade 7 math lesson, I solve a variety of integer problems:
In the second part of the lesson, we start out with two tricky TRUE/FALSE questions:
Lastly, I solve a problem where we enlarge a triangle by using the scale factor of 3. The three vertices of the triangle are at the points (−1, −2), (1, −1), and (0, 1) in the coordinate grid. Then we multiply all those coordinates by 3 to get a new, bigger triangle that is similar to the original.
Multiplication of integers — a video lesson
Division of integers — a video lesson
Math Mammoth Integers — a self-teaching worktext with explanations & exercises for all operations with integers
Math Mammoth Grade 7 complete curriculum
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