Mathematics Grade 8 15 min

Write equation for proportional relationships

Write equation for proportional relationships

What you'll learn

  • Identify the key information (whole, part, percent) in a percent word problem with 80% accuracy.
  • Solve percent word problems involving finding the part, given the whole and percent, with 70% accuracy on a worksheet containing at least 10 problems.
  • Explain the steps used to solve a percent word problem to a partner, using mathematical vocabulary (percent, whole, part) correctly at least three times.
  • Apply percent concepts to solve real-world word problems related to discounts, sales tax, and tips, scoring at least 75% on a quiz.

Tutorial Preview

1

A car travels 120 miles in 2 hours. Write an equation for the distance (d) in hours (h).

2

A recipe's flour (f) to cookies (c) is shown: (2 dozen cookies, 3 cups flour), (4 dozen, 6 cups). Write an equation.

3

The equation c = 8p shows the cost (c) for (p) pizzas. What is the cost per pizza?

Sample Practice Questions

Easy
A bike travels 20 miles in 2 hours. Write an equation for distance (d) in hours (h).
0.d=10h
1.d=20h
2.d=2h
3.h=10d
Easy
A store sells 3 apples for $2. Write an equation for the cost (c) of (a) apples.
0.c=3a
1.c=1.5a
2.a=1.5c
3.c=(2/3)a
Easy
A factory makes 40 toys in 8 hours. Write an equation for toys (t) in hours (h).
0.t=8h
1.t=40h
2.t=5h
3.h=5t

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Frequently asked questions

What grade level is "Write equation for proportional relationships"?

Write equation for proportional relationships is a Grade 8 Mathematics lesson on ExcelOS.

What will I learn in Write equation for proportional relationships?

You'll be able to: Identify the key information (whole, part, percent) in a percent word problem with 80% accuracy; Solve percent word problems involving finding the part, given the whole and percent, with 70% accuracy on a worksheet containing at….

Is "Write equation for proportional relationships" free to practice?

Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.

How many practice questions are included with Write equation for proportional relationships?

This lesson includes 22 practice questions across multiple difficulty levels, each with instant feedback and explanations.

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