Rational Number Operations
Write −7/8 as a decimal.
-0.875
What is the negative square root of 25/49?
-5/7
A jacket originally costs $80 and is 25% off. Find the discount.
$20
Simplify:
9x−4y−6x+2y+7
3x-2y+7
Convert 2 3/5 to a decimal.
2.6
Write -2.25 as a mixed number in simplest form.
-2 1/4
8.5
A jacket originally costs $80 and is 25% off. Find the sale price.
$60
Simplify:
(5x + 1/2) + (-2x - 1/6)
3x + 1/3
Is -12 rational or irrational?
rational
Add -3/4 + 2 1/2
1 3/4
Which sets of numbers does the cube root of 512 belong in?
rational, integer, whole, natural
A bicycle's price decreases from $240 to $180. Find the percent decrease.
25%
Simplify:
(4x - 7) - (x + 2)
3x - 9
A loan of $5,000 has a simple interest rate of 3% for 2 years. Find the interest.
$300
Find 4 2/3 - (-6 1/6)
10 5/6
True or False? The square root of 45 is rational.
False
A stock investment increases from $500 to $850. Find the percent increase.
70%
Find the GCF of 36ab and 60abc?
12ab
The value of an item increased by 60%. It originally cost $50. What is the new price?
$80
8 1/4 divided by (-2 3/4)
-3
Evaluate a/b - c + d
a= 3/4
b = -3/8
c = 1.2
d = 1/2
-2.7
Maya earns a 4% commission. How much must she sell to earn $1,200?
$30,000
Simplify and Factor:
-4(3x - 5) + 20x
4(2x + 5)
A video game costs $120 and is discounted 35%. Then sales tax of 10% is added. What is the final price?
$85.80