Solving Equations
Jimmy James was solving this equation. Check his work to see if he is right. -12 = x - 14 x = -26
NO!
Add the integers
6+(-4)
2
Multiply the integers
-3 x 2
-6
Divide the integers
-15 ÷ 3
-5
−4 × 2 + 1
-7
Murray has eighteen apples and six friends. How many apples would each friend get?
An online retailer charges $6.99 plus $0.55 per lb to ship electronics purchases. How many pounds is a DVD player for which the shipping charge is $11.94? Write an equation AND answer in a sentence.
6.99 + .55x = 11.94
The DVD player weighs 9 lbs.
Add the integers
-3+2
-1
.6x = 3.6
X = 6
Divide the integers
-28 ÷ 7
-4
−4 + 5 − 6 − 7
-12
What is the absolute value and inverse of three thousand
Absolute Value: three thousand
Inverse: Negative Three Thousand
Solve for n:
-6 + (n/14) = -5
n = 14
Add the integers
-5+ (-6)
-11
-7 x -7
49
Divide the integers
-48 ÷ -6
8
12 ÷ (2 − 4) − 6
-12
What is the place value and real value of three in the following number?
341, 879
Place Value: Hundred Thousand
Real Value: Three Hundred Thousand
Solve for k:
-8k + 3 = -125
k = 16
Add the integers
-12 + (-4) + (-3)
-19
-7 x -6
42
Divide the integers
-84 ÷ -7
12
(28 ÷ 4 ) + 3 + ( 10 - 8 ) × 5
20
Rebecca has five dollars. Melanie has three times as many dollars as Rebecca. How many dollars does Melanie?
Melanie has fifteen dollars.
Morgan subscribes to a website for processing her digital pictures. The subscription is $5.95 per month and 4 by 6 inch prints are $0.19 each. How many prints did Morgan purchase if the charge for January was $15.83? Write an equation AND answer in a sentence.
5.95 + .19x = 15.83
She bought 52 prints.
It costs $12 to attend a golf clinic with a local pro. Buckets of golf balls for practice during the clinic cost $3 each. How many buckets can you buy at the clinic if you have $30 to spend? Write an equation AND solve. Answer in a sentence.
12 + 3x = 30
x = 6
You can buy 6 buckets of golf balls.
Multiply the integers
-2 x -2 x -7
-28
Your family is taking a long-distance road trip. You begin with 16 gallons of gas in the tank. Your car uses 3 gallons of gas per hour of driving. YOu will need to stop for gas when there is 1 gallon left in the tank. After how many hours will you need to stop to refuel?
You will have to stop after 5 hours.
3 - [6 ÷ 3] x 2
-1
Alex can buy four bags of cat food and have one dollar left over.