Percents
10% of 90
9
Mean of 5, 10, 15, 20
12.5
Rectangle: 8 × 6
48 unit2
3 × 4 × 5
60 units3
Distance between (4,2) and (4,9)
7
30% of 150
45
Find the median: 2, 4, 6, 8, 10, 12
7
Triangle: base 12, height 5
30 units2
6 × 3 × 2
36 units3
Write 3:12 in simplest form
1:4
A $80 item is 25% off. What is the sale price?
$60
Range of: 3, 7, 7, 9, 15, 20
17
Parallelogram: base 14, height 3
42 units2
A box is 10 × 2 × 3
60 units3
Find 40% of 250
100
A number is increased by 50% to become 90. What was the original number?
60
The mean of a data set is 12.
There are 5 numbers in the set.
What is the total sum of all the numbers?
60
Rectangle (10×4) + triangle (b=10, h=6)
70 units2
A prism has volume 120. If base = 10 and width = 3, find height
4 units
A data set has mean 15 and 5 numbers. One number is 25. Are the others mostly higher or lower than 15?
Lower
You spend 20% of $200, then 30% of what’s left. How much money remains?
$112
If the mean is 10 for 4 numbers, what is the total?
40
Trapezoid with bases 8 and 12, height 6
60 units2
A box is doubled in height. What happens to volume?
It doubles
A rectangle is 12 × 8. A triangle (b=12, h=4) is removed.
Find remaining area
Rectangle: 96
Triangle: 24
Remaining = 72