Math 7 · Unit 3, Lesson 7
Rational Number Problems
Real problems with all four operations
ElleMath-speak
In this lesson, we solve real-world and mathematical problems with rational numbers, using all four operations in the correct order.
FinnPlain English
You know how to add, subtract, multiply, and divide with negatives. Now we put it all together, in the right order, on real problems.
Write it down. Do every change on paper, one line per step. Changing signs in your head is the number one reason for missed problems. If you changed something, it should be on the paper.
Go in order. Each tile has a short explanation, then a "Let me try a few" button.
1Order of OperationsGroups first, then times and divide, then addStart here
2Plan It OutWrite one expression, estimate, then solve
3Sharing the PrizeA fair share is a proportion
4Unit 3 ReviewEvery rule from the unit in one place
When you have finished
At the end of each tile you will find a review form to give us feedback.
NC standard: NC.7.NS.3.