Podcast
Questions and Answers
What is the unit rate for the cost per bar if you buy 3 bars but only pay for 2?
What is the unit rate for the cost per bar if you buy 3 bars but only pay for 2?
- 20 PLN per bar (correct)
- 33 PLN per bar
- 22 PLN per bar
- 30 PLN per bar
If a store sells a pack of 6 bars for 66 PLN, what is the cost per bar?
If a store sells a pack of 6 bars for 66 PLN, what is the cost per bar?
- 10 PLN per bar
- 11 PLN per bar (correct)
- 15 PLN per bar
- 12 PLN per bar
How long would it take 7 people to build 7 models if 5 people take 20 minutes for 5 models?
How long would it take 7 people to build 7 models if 5 people take 20 minutes for 5 models?
- 40 minutes
- 10 minutes
- 30 minutes
- 20 minutes (correct)
Given the water tank's initial measurement and changes over 5 days, what is the rate of change from July 1 to July 6?
Given the water tank's initial measurement and changes over 5 days, what is the rate of change from July 1 to July 6?
Using the information on water tank levels, how much water is left on July 4 if the tank decreases at the same rate?
Using the information on water tank levels, how much water is left on July 4 if the tank decreases at the same rate?
What is the correct order from least to greatest of the following integers: 4, -12, -208, 190, -250?
What is the correct order from least to greatest of the following integers: 4, -12, -208, 190, -250?
Which integer correctly represents the temperature after 5 hours if it started at -5℃ and warmed up 2℃ each hour?
Which integer correctly represents the temperature after 5 hours if it started at -5℃ and warmed up 2℃ each hour?
What is the result of the operation $-5 + 3 \times -2$?
What is the result of the operation $-5 + 3 \times -2$?
How much money would be left after buying a TV for 80 dollars with 15 dollars in the bank?
How much money would be left after buying a TV for 80 dollars with 15 dollars in the bank?
What is the unit rate (cost per soda) if a 6-pack of soda costs 24 zl?
What is the unit rate (cost per soda) if a 6-pack of soda costs 24 zl?
What is the result of $-10 - (-3)$?
What is the result of $-10 - (-3)$?
After descending from 6000m above sea level at 400m an hour for 5 hours, how high above sea level am I?
After descending from 6000m above sea level at 400m an hour for 5 hours, how high above sea level am I?
What is the result of the calculation $4 - (-6)$?
What is the result of the calculation $4 - (-6)$?
Study Notes
Ordering Integers
- Place integers on a number line with negative numbers on the left and positive numbers on the right.
- The further to the right on the number line the greater the integer.
Integer Operations
- When adding integers, if the signs are the same, add the numbers and keep the sign.
- When adding integers, if the signs are different, subtract the smaller number from the larger number and keep the sign of the larger number.
- When subtracting integers, change the sign of the second integer and then follow the rules for addition.
- When multiplying integers, if the signs are the same, the product is positive.
- When multiplying integers, if the signs are different, the product is negative.
- When dividing integers, follow the same sign rules as multiplication.
Unit Rates
- A unit rate is a ratio that compares a quantity to one unit of another quantity.
- To find a unit rate, divide the quantity by the number of units.
Tables and Graphs
- A table can be used to organize data and find patterns.
- A graph can be used to visualize data and relationships.
- Rates of change can be found from graphs and tables by calculating the change in output divided by the change in input.
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Description
Test your knowledge on ordering integers, performing operations, understanding unit rates, and interpreting tables and graphs. This quiz will help reinforce essential math concepts for students.
