Expressions and Equations
Solve this Equation:
6x = 42
x = 7
-9 x 5
-45
What number is this?
100,000
One hundred thousand
Translate this statement into an Algebraic Equation
"six times something will give you 42."
6x = 42
What is 4 squared?
16
Simplify this Expression.
9x + 3 + 11x - 1
20x + 2
26 + 40
66
What number is this?
1,500,000
One million, five hundred thousand
Translate this into an Algebraic Equation.
5 more than 4 times a number is 30
4x + 5 = 30
A square has side lengths of 10 cm. What's the perimeter of the square?
40 cm.
When simplifying addition/subtraction expressions, we must _____________ like _________.
combine, terms
100 divided by 4
25
What is this value in standard numerical form?
7.0 x 104
70,000
Translate this situation into an Algebraic Expression.
Jack worked 3 hours, making a certain amount of money each hour, and earned an extra 6 dollar tip at the end of his shift.
3x + 6
What's the square root of 81?
9 and -9
When a number is attached to a parentheses like this:
-5(x - 6), what are you supposed to do?
Multiply the value outside the parentheses by the terms inside the parentheses.
112
121
What is 8,000 in scientific notation form?
8.0 x 103
Translate this Situation into an Algebraic Equation.
Tim had 40 pencils and he gave 2 away to each of his friends and still had 24 pencils left over for himself.
40 - 2f = 24
Solve this Equation.
x2 - 29 = 20
7 and -7
Solve this Equation:
- (4x - 1) + 8x = -2 - 4 + x
x = -2.333333333
12 x 15
180
What is 1,000,000 divided by 10?
100,000
Translate this into an Equation AND Solve it.
A rectangle is 5 times as long as it is wide, and the perimeter is 1200 cm. What is the length and width of the rectangle?
L + L + W + W = P
2L + 2W = 1200
5W = L
2(5W) + 2W = 1200
10W + 2W = 1200
12W = 1200
W = 100, which means L = 500
Estimate the square root of 19 without a calculator.
4.4 and -4.4