Ratios
Jeff can make 50 muffins in 10 hours. How many muffins can he make in an hour?
5 muffins.
What is 50% of 37?
18.5
5+ -31.54=x
-26.54
5 x -19 x -7=
665
What type of number is -2? 5.5? 2?
integer, rational, and whole
Henry and his friend Jason want to make pies. Before they made 72 pies in 18 hours.How many hours will it take them to make one pie if they work at the same rate?
1/4 or 15 minutes
How do you find a 50% of a number?
You can half it or multiply by 0.5 or use a proportion
25 - - 54.25
79.25
(-7 x 2.35) - 2
–18.45
Is the population of a country an integer?
Yes
75/100 = 3/x
x=4
40 is 125% of what number?
32
A professional athlete swims 13 meters below sea level, then back up. He climbs a rocks climbs 15 meters high and back down. How many meters did the athlete travel in total?
56 meters
12321/3 x 2.2
9035.4
When you divide the circumference of a circle by the diameter, what type of number do you get?
Irrational if you do it precisely, but rational if you round.
What is a ratio?
Answers can vary
20 is what percent of 25?
80%
Add and Subtract:
6.5 + 4.3 - 23.9 + 6.7 - 114.1 =
-120.5
-7/8÷ 15/4=
-7/30
What types of numbers are these: Square root of 5? pi? -3.67? -6
irrational, irrational, rational, integer
Uzair can make 3 croissants in 10 minutes. Belle can make 7 croissants in 15 minutes. Clair can make 9 croissants in 20 minutes. How many can they make together in an hour?
73
A store advertises a 25% discount on a jacket that originally costs $48. After the discount, sales tax of 8% is added. What is the final price of the jacket?
38.88 dollars
A student is tracking the temperature changes throughout a winter day.
At 6 AM, the temperature is –4.5°C.
By noon, the temperature increases by 7.25°C.
By 6 PM, the temperature dropped by 3.8°C. What is the temperature at 6PM?
-1.05 C
Ms. Liza wrote a math problem on the board. Sadly before Sam saw the question Ms. Liza erased it.
5 x 5.5 x _ = 8_.5.
What are the blanks?
3,2
Sort the following numbers if w and x are integers, y and z are rational.
w/x, y/z, wy/xz
rational, rational, rational