# Unit 4 Support Cite

### By:Claire 1st Period

## Unit 4 Standards

MCC6.EE.5: Understand solving an equation or inequality as a process of answering a question: which values from a specified set, if any, make the equation or inequlity true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true.MCC6.EE.6: Use variables to represent numbers and write expression when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.MCC6.EE.7: Solve real-world and mathematical problems by writing and solving equations of the form x+p=q and px=q for cases in which p,q and x are all nonnegative rational numbers.- algebra word problems with addition and multiplication

MCC6.RP.3: Use ratio and rate reasoning to solve real-world mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.MCC6.EE.8: Write and inequality of the form x > c or x < c to represent a constraint or condition in real-world mathematical problem. Recognize that inequalities of the form x > c or x < c have infinitely many solutions; represent solutions of such inequalities on number line diagrams.- write inequalities from word problems

MCC6.EE.9: Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation. For example, in a problem involving motion at constant speed, list and graph ordered pairs of distances and times, and write the equation d = 65t to represent the relationship between distance and time.- Independent and Dependent Variables in graphs

MCC6.RP.3a: Make tables of equivalent ratios relating quantities with whole-number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane. Use tables to compare ratios.MCC6.RP.3b: Solve unit rate problems including those involving unit pricing and constant speed. For example, if it took 7 hours to mow 4 lawns, then at that rate, how many lawns could be mowed in 35 hours? At what rate were lawns being mowed?MCC6.RP.3c: Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.MCC6.RP.3d: Use ratio reasoning to convert measurements units; manipulate and transform units appropriately when multiplying or dividing quantities.- Convert measurement (metric and customary)

## Standard MCC.EE.5

In this standard is focused on algebra substitution

## Standard MCC.EE.6

Writing expressions is the main purpose of this standard.

## Standard MCC.EE.7

In this standard you will be learning how to add and multiply in algebra word problems.

## Standard MCC.EE.8

Writitng inequalities from word problems is the outline for this standard.

## Standard MCC.RP.3

There are many different sections of this standard. They are rates and ratios, algebra tables, unit rate, solving percentage, and converting different measurements.

## Rates, Ratios, and Unit Rates

*A ratio makes a comparision. An example is if there are 3 green aliens and 4 purple aliens, the ratio of green to purple alliens is 3 to 4. There are three ways to write this; 3 to 4, 3:4, and 3/4. A rate is a ratio that compares quantities that are measured in different units. This spaceship travels at a certain speed. Speed is an example of a rate. Speed can be measured in many different ways. This spaceship can travel 100 miles in 5 seconds. 100 miles in 5 seconds is a rate. A unit rate compares a quantity to one unit of another quantity. Use division to find the unit prices of the two products in question. The unit rate that is smaller (costs less) is the better value.* An example is when there is a sale on cereal. The sale is $6.50 for three regular sized bags, but its competing store has the same brand and size bag for only $2.75 for one bag. What is the better choice? (Remember that you need to divide the prices to get the unit rate)

* Italics= this was noted from a power point called *www.pptuu.com/show_249314_1.html

## Percentages and Measurement Convertion

If you had 190 houses in your nieghborhood and 20 of the houses were painted white, the percentage would be 38% of the house were painted white. I got this by moving the decimal twice o the left for the houses and multiplied .20 by 190 t0 get 38%

## Tutor Video

For me the hardest concept was converting measurement because it is hard to memorize for me. Here is a video to help you understand what I thought was the hardest standard

## CRCT Prep Answer Key (Unit 4 Guide)

22. A

23. B

24. A

25. B

26. A

27. B

28. B

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