Decimals
Write 1/4 as a decimal
0.25
A recipe calls for 4 cups flour 1 cup chocolate chips and 2 cups water. What is the ratio of chocolate chips to flour to water?
1:4:2 or 1 to 4 to 2
Angela is riding her bike to school. If she is travelling at 5 m/s, what equation describes how far she is riding for any given time?
y=5x or d=5t
DOUBLE OR NOTHING:
If Johnny has 100,000 apples and he give away half, how many apples did Johnny give away?
50,000
What is 21/42 as a decimal?
0.5
If Salem, Oregon gets 60 days of sun, what is the ratio of sunny days to rainy/cloudy days? Round answers to the nearest whole numbers. HINT: what is it as a decimal?
17:100
If I blink my eyes 15 times in one minute, how many times will I blink in 2 hours?
1800 times
Pop star Ariana Grande needs to warm up for a 1/3 of her performance time before every performance. If she is performing for an hour, what is the total time she needs before she can go home to her dogs? Answer must be in minutes, round to the nearest one.
80 minutes
What is 0.4 of 345?
138
There are many species that visit Newport Beach in Oregon. Roughly there are 48 gray whales, 2,020 starfish, 426 seals, and 6,282 seagulls. What is the ratio of these animals consecutively?
24:1010:213:3141 or 24 to 1010 to 213 to 3141
DOUBLE OR NOTHING:
If I have 30 pieces of gum and I give Darren 1 piece a day, what equation describes the amount of gum I have on a given day?
30-x=y
Hall of Fame player Derek Jeter has a batting average of 0.31. if he was up to bat 50 times, how many times did he hit the ball?
15 times
Emily is selling T-shirts. She says that 0.35 of her profits are going to pay for the T-shirts, 0.47 of her profits are going to pay for the ink used to make the T-shirts, and the rest of the profits are going to charity. If Emily made $239.98 profit, how much money is going to pay for the T-shirts? Round to the nearest dollar.
$84.00
If a skyscraper is 2,340 ft tall, what scale factor would you need to fit it on a piece of paper that is 11 inches long. Round to the nearest one.
2,553
Two cars are racing. The track has a circumference of 200 m (1 lap around the track is 200m). If Car A has a head start of 5 m and is traveling 19 m/s, what rate does Car B need to go in order to tie with Car A within the first lap? Round to the nearest tenth.
Hint: How long does it take for Car A to complete one lap? The rate (or slope) is in m/s.
Car A equation: 19x+5=y
19x+5=200 19x=195 x=10.3
200m/10.3s=19.4m/s
Car B equation: 19.4x=y
Find x.
It's right there!!!
DOUBLE OR NOTHING:
Emily is selling T-shirts. She says that 0.35 of her profits are going to pay for the T-shirts, 0.47 of her profits are going to pay for the ink used to make the T-shirts, and the rest of the profits are going to charity. If Emily made $239.98 profit, what decimal represents the amount of profits used to pay for the ink, to the amount of total profits?
0.47
The dimensions for an airplay are 100 ft long, 30 ft tall and 80 ft wide. There is a toy replica of the airplane that fits in a box that is 8.5 in by 11 in by 3 in. What is the scale factor of the replica of the plane so it fits in the box?
DOUBLE OR NOTHING: What is the ratio for the volume of the actual plane to the volume of the replica?
10
DOUBLE OR NOTHING: 1,000
11, 3, 8.5
A ball was dropped from a height of 58 m. If the ball landed after 9.18 seconds, what was the rate of it falling (what is the rate of gravity)?
Remember: how do you calculate slope? What is the rise/run?
6.32m/s
COMPUTE:
300/3(2+4)+32^2+(33-4=3)-42+25/5-(6/3)+4-4562
-2,943