Numbers and Operations
15 - (-30) = ?
45
Remember to always rewrite subtraction as addition.
Explain why these expressions are equivalent:
40x + 15
5(8x + 3)
If you apply the distributive property to 5(8x +3) you will get 40x +15
What is the probability of rolling an even number on a standard dice?
1/2
.5
50%
This planet is known as the “Red Planet” because of its rusty color.
Mars
-7 - 5 + 10 = ?
-2
Write an equation for the following scenario: Ryan wants to buy chick-fil-a sandwiches for his family. Each sandwich costs $6 dollars.
y=6x, Where x is the number of sandwiches and y is the the total cost.
Curtis wants to figure out what is the most popular sport in the school. Curtis only surveys the people in his DEN. Will this data be representative of the whole school? Why or Why not?
No, Curtis needs to randomly survey everyone in the school. His data only represents his DEN class.
How old will America be on July 4th this year?
250!
(-2)(-5)(-7) =?
-70
Jacob takes an Uber from his house to work. Uber charges an initial fee of $4 and an additional $2 per each mile traveled. If Jacob's ride cost $28, how many miles did he travel?
12 miles
From a bag, Evan selects 10 marbles. Of the 10 marbles 4 of them are green. If the bag has a total of 100 marbles, how many could you approximate to be green?
about 40 marbles are green
What is the largest ocean on Earth?
Pacific Ocean
14x - 35
The distributive Property is when you multiply a number on the outside of parentheses by all the numbers on the inside of the parentheses.
Write an equation for the following scenario: Becca goes to Hobby Lobby for printer ink and colored paper. The printer ink cost $45 and each pack of paper cost $1.50. Becca spent a total of $54.
1.50x + 45 = 54
If a bag has 7 green marbles, 3 blue marbles, and 10 yellow marbles. What is the probability of selecting a blue marble? Express answer as a fraction, decimal, and percent.
3/20
.15
15%
What is the largest mammal on Earth?
Blue whale