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Illustrative Math
Grade 8
Let’s solve linear equations like a boss.
Illustrative Math Unit 8.4, Lesson 6 (printable worksheets)
The triangle and the square have equal perimeters.
Without solving, identify whether these equations have a solution that is positive, negative, or zero.
Here are a lot of equations:
Mai gave half of her brownies, and then half a brownie more, to Kiran. Then she gave half of what was left, and half a brownie more, to Tyler. That left her with one remaining brownie. How many brownies did she have to start with?
We can work backwards from the one remaining brownie.
(1 + 1/2) · 2 = 3
(3 + 1/2) · 2 = 7
We can check.
Mai had 7 brownies, she gave 4 brownies to Kiran and 2 brownies to Tyler.
The Open Up Resources math curriculum is free to download from the Open Up Resources website and is also available from Illustrative Mathematics.
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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