Number Systems
Kayla began a science experiment with 18 grams of an unknown solid. During the experiment, the change in the mass of the solid was – 7 grams. What was the mass of the solid at the end of the experiment?
11
6n + 28 = 88
10
6/8 =x/12
9
Rick paid $350.00 for a mini-fridge. Sales tax is 8%. How much did Rick pay including tax?
$378.00
A bag is full of 12 marbles 4 are green 4 are red and 2 are purple. What is the probability of getting a red marble?
4/12 or 1/3
Is –8 − –3 positive or negative?
Negative
r/5 + 74 = 81
A: 35
9/24 = x/40
15
Skyler bought a game on sale for $116 It was marked down 20%. What was the original price?
A: $145.00
A dice with faced numbered 1-6 was rolled 20 times and the number 2 was rolled 9 times. By this logic how many times would 2 be rolled if the dice was rolled 180 times.
81
A cafeteria used 363.64 kilograms of beans to make 8 batches of chili. What quantity of beans went into each one?
45.455
b/2+7=10
6
34/4 = x/10
85
Krista bought a pair of jeans priced at $65 on sale for 25% off the original price. What did Krista pay for the jeans?
A: $48.75
A bag full of 30 marbles is randomly selected from. There is an equal amount of red, pink, green, purple, blue, and orange marbles. 2 pink marbles are taken 3 red marbles are taken 5 purple marbles are taken 1 green is taken and 6 blues were taken. Whats the probability of getting blue?
0/13
3.25 / 0.5
6.5
y/3 + 9 = 10
3
Oscar loves cheeseburgers. He enters a 24-hour cheeseburger eating contest. During the contest, Oscar eats a cheeseburger every 15 minutes. How many cheeseburgers will he eat during the entire contest?
96 cheeseburgers
Find 25% of 204.
51
A bag full of 30 marbles is randomly selected from. There is an equal amount of red, pink, green, purple, blue, and orange marbles. 2 pink marbles are taken 3 red marbles are taken 5 purple marbles are taken 1 green is taken and 6 blues were taken. Whats the probability of getting pink?
4/13
-⅓ x ¾
-1/4
h/2 + 8 = 12
8
Q:24/384 = 60/x
960
What percent of 60 is 24?
40%
Q: Every time a spinner is spun the color it lands on disappears. There are 4 colors (Green, orange, red, and blue) and 16 of each color. Green is spun 4 times, red is spun 5 times, and orange is spun once. What is the probability of getting red in fraction form?
11/54