Evaluating Expressions
2[3-5] + [(-3) x 8]
-28
35% of what number is 22? (round to nearest hundredth)
62.86
Jasmine bought 32 kiwi fruit for $16. How many kiwi can Lisa buy if she has $4?
8 kiwis
Find the area of a circle with radius of 12 ft.
452.16 ft squared or 144π ft squared
15 − (m + p); use m = 3, and p = 10
2
The temperature decreased from 75 degrees to 45 degrees. Find the percent change.
40% decrease
Molly bought two heads of cabbage for $1.80. How many heads of cabbage can Willie buy if he has $28.80?
32 heads of cabbage
Write 3/8 as a percent.
37.5%
y(x − (9 − 4y)); use x = 4, and y = 2
6
If the original price of a book is $18.50, and the discount is 45%, find the sale price.
$10.18
The currency in Argentina is the Peso. The exchange rate is approximately $3 = 1 Peso. At this rate, how many Pesos would you get if you exchanged $121.10? Round to the nearest tenth.
40.4 Pesos
Write using scientific notation:
0.000000786
7.86 × 10−7
x − (x − (x −y3 )); use x = 9, and y = 1
8
If the original price of an SUV is $42,000, and the tax is 3%, how much is the final cost of the car?
$43,260
Mary reduced the size of a painting to a width of 3.3 in. What is the new height if it was originally 32.5 in tall and 42.9 in wide?
2.5 inches
Solve: 4n - 3 = 25
n = 7
A circle has radii of 5x+5y. If x= 0.002m and y = 0.001m, find the area of the circle. Leave your answer in terms of pi and in scientific notation.
2.25 x 10-4 (pi) m2