John's new bike costs $120 normally, but his dad got it for 30% off. How much did his dad pay?
$84
100
A drawing has a scale of 1 in. to 10 ft. If a building is 120 ft. long in real life, how long is it on the drawing?
12 in. (or 1 ft.)
100
Jimmy thought it would take him 45 mins. to do his homework, but it only took him 40 mins. What is his percent error?
12.5%
100
20 increased by 70% is?
34
200
55 decreased by 20% is?
44
200
A stock price sat at $40 yesterday, however today it shoots up by 30%. What is the new price?
$52
200
Two science students are making a scale drawing of an elephant. If the elephant is 11 ft. long in real life, and the scale that they want to use is 1 in. : 2 ft., how long should it be on the drawing?
5.5 in.
200
A teacher thought that she'd get 8 students showing up for practice, but actually 15 showed up. What was her percent error?
46.7%
200
If the scale factor is 80 and the length on the drawing is 13 in., how big is it in real life?
1040 in.
300
8% of 45 is?
3.6
300
The price of gas is projected to go up by 125% next year. If the price is currently $2.50 per gallon, what will the new price be?
$5.63 (rounded from $5.625)
300
A map shows two towns that are 20 mi. apart. If the scale of the map is 1/2 in. to 1 mi., how long are they apart on the drawing?
10 in.
300
Tim estimates that it will take him 40 minutes to do homework in each subject at night. He actually takes 50 minutes to do his math, and 1 hour to do his ELA. What was his percent error in each subject?
MATH: 20%
ELA: 33.3%
300
If the dimensions of a living room are 145 in. by 200 in., what is that in feet?
12.1 ft. by 16.7 ft.
400
What is 70 increased by 320%?
294
400
The teacher noticed that 20% of her students were absent today. If her class usually has 30 students, how many were absent?
6
400
Two cities are 7 in. apart on a map. If the map's scale is 1/8 in. to 1 mi., how far are they apart in real life?
56 mi.
400
A students did a scale drawing and thought that his scale should be 1 in. to 30 mi. Actually, the scale should have been 1 in. to 25 mi. Find his percent error.
20%
400
If $800 earns $12 1/2 in interest in one year, what sum would earn $50 interest in one year?
$3,200
500
What is 90 decreased by 90%?
9
500
The price of a gallon of a milk has gone up 580% since 1908. If the price was 25 cents back then, how much is it today?
$1.70
500
The dimensions of a living room are 1 1/2 in. by 3 3/4 in. If the scale factor is 75, what are the dimensions in real life?
112.5 in. by 281.25 in.
(9 ft. by 23 ft.)
500
A teacher thought her grading would take 20 min. for each period. Actually, Period 1 took 35 minutes, Period 2 took 10 mins., and Period 3 took an hour. Find the percent error for each period.
Per 1: 42.9%
Per 2: 50%
Per 3: 66.7%
500
If the scale on a map is 1/4 in. to 1 mi., and the length on the drawing is 13 in., how big is the length in real life?