Ratio and Percent
Pat needs 2.5 cups of sugar for 3 batches of cookies. If Pat needs to make 12 batches of cookies, how much sugar will he need?
10
Solve the equation
2x + 5 = 15
2x + 5 =15
2x + 5 - 5 = 15 - 5
2x = 10
x = 5
What is the decimal equivalent of 16/25?
0.64
If I roll a 6-sided dice 100 times, chance of landing on 6 at least once?
likely
Andy buys 15 candy bar for $32.25. Then sells each for $2.15. What is Andy's profit in Percent?
0%
2.15 x 15 = 32.25
32.25 - 32.25 = 0
20% discount on a $440 item. What is the price?
440 x 0.8 = 352
Which expression is equivalent to 3 - 5(4x - 2)
7 - 20x
No calculator
1.92 / 3 = ?
0.64
Mina became best friends with Nina. But they don't know each other's birthdays. What is the chance Mina will guess Nina's birth month correctly?
1/12
Divide $100 in a way that one person will get $1 more than the other. How much will each get?
100-1=99 99/2= 49.5 49.5+1=50.5
Answer: 49.5 and 50.5
A bicyclist travels 13/2 miles in 2/3 hour. What is the bicyclist's average speed, in miles per hour?
Divide 13/2 by 2/3. 9.75
Solve the equation
3(2x-5) = 0
3(2x-5) = 0
6x - 15 = 0
6x = 15
x = 2.5
What is the value of the expression -2 (-3)(4)
24
If Nina's birthday is in May, what is the chance for you to guess her birthday?
1/31
There is a patch of lily pads on a lake. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?
47 days
An object travels along a horizontal straight path at a constant rate. The object travels 5% of the length of the path in 1.5 second. At that rate, how many seconds does it take the object to travel the entire length of the path?
Use Percent Line
30
Write the expression 0.5(18y + 2y -10) as the sum of two unlike terms.
0.5(20y-10) = 10y-5
9y+y-5 = 10y-5
Awa walked 3/4 miles each day for 4 days
Ana walked 3/5 miles each day for 5 days
Who walked most?
same
The letters from the word 'Basketball' are placed in a bowl. What is the probability of choosing the letter 'a'?
1 out of 5
7 - 7 x 7 ÷ 7 + 7
7
There are 55 students in a classroom. If the ratio of boys to girls is 2:3, how many boys and girls are there?
22 boys 33 girls
During lunch, a sandwich shop owner sold 2 types of sandwiches: turkey and roast beef. Each sandwich cost $4.99 and the total sales from all of the sandwiches sold was $219.56. There were 25 turkey sandwiches sold. How many roast beef sandwiches were sold?
219.56 / 4.99 = 44
44-25=19
A scuba diver dives 24 feet below the water’s surface. The diver then rises 10 feet, stops, and then dives downward another 18 feet. How far, in feet, does the diver need to rise upward to reach the water’s surface?
24-10+18=32 below
So, 32 up
You rolled a 6 sided dice twice. What is the probability of landing on the same number both times?
1/6
Each number has 1/36 chance of landing. Add them 6 times.
You start with 10 apples and give away half. Then you add 5 more apples and give away half again. How many apples are left?
5