Lesson 06: Write Expressions Where Letters Stand for Numbers | Unit 6: Expressions and Equations

Open Ended

A crew has paved $$\frac{3}{4}$$ of a mile of road. If they have completed 50% of the work, how long is the road they are paving? Provide your reasoning.

Multiple Choice

40% of $$x$$ is 35. Write an equation that shows the relationship of 40%, $$x$$ , and 35.

• 0.4 * 35 = x
• 0.4 * x = 35
• 0.4 + x = 35
• x - 0.4 = 35

Open Ended

40% of $$x$$ is 35. Use your equation to find the value of $$x$$ . Show your reasoning.

Open Ended

Priya has completed 9 exam questions. This is 60% of the questions on the exam. Write an equation with a variable to represent this situation. Explain the meaning of the variable.

Open Ended

Priya has completed 9 exam questions. This is 60% of the questions on the exam. How many questions are on the exam? Answer the question. Show your reasoning.

Open Ended

20% of $$a$$ is 11. What is $$a$$ ? Show your reasoning.

Open Ended

75% of $$b$$ is 12. What is $$b$$ ? Show your reasoning.

Open Ended

80% of $$c$$ is 20. What is $$c$$ ? Show your reasoning.

Open Ended

200% of $$d$$ is 18. What is $$d$$ ? Show your reasoning.

Multiple Choice

80% of $$x$$ is equal to 100. Which equation shows the relationship of 80%, $$x$$ , and 100?

• 0.8x = 100
• 0.2x = 100
• x = 80% of 100
• 0.8 = 100x