Definitions
What Is An Algebraic Expression?
What is a mathematical phrase where variables and constants are combined using the operational symbols?
or
Number sentences with variables, constant numbers, and operation signs.
Round 6.47 to the nearest whole number.
What is 6
3 x 2 + 18 ÷ 3
what is 12
6 + 18 ÷ 3
6 + 6
12
7x + 2 when x = 3
What is 23
7(3) + 2
21 + 2
23
What Is A Constant?
What is the Fixed numbers in the expression. ex: (2, 5, 10)
Write as a decimal.
"Three hundred fifty and seven tenths"
What is 350.7
100 - (9 - 4) ÷ 5
What is 99
100 - 5 ÷ 5
100 - 1
99
2x + 3 when x = 4
What is 11
2(4) + 3
8 + 3
11
What Is A Variable?
What is Letters that represent unknown numbers (x, y, z)
TRUE OR FALSE: Is A Math Expression Different From A Math Equation?
TRUE!!
Expressions NO = sign
Equations have = signs
(100 - 75) x 20 ÷ 102
What is 5
(100 - 75) x 20 ÷ 102
25 x 20 ÷ 100
500 ÷ 100
5
72 - 25
What is 40
( 25 = 2 x 2 x 2 x 2 x 2= 32)
72 - 32 = 40
What Is Exponent?
What is the small number raised, telling how many times to multiply the base number by itself.
What is the value of the 8 in 259.48
What is 0.08 or 8/100
102 ÷ 4 x 6
What is 150
100 ÷ 4 x 6
25 x 6
150
100 - 7(3 + 2) + 72
What is 114
100 -7(5) + 72
100 - 7(5) + 49
100 - 35 + 49
65 + 49 = 114
What is a coefficient?
What is the Numbers multiplied by variables example (3 in 3x)
Write 302.49 in expanded form.
(3 x 100) + (2 x 1) + (4 x 1/10) +(9 x 1/100)
or
(3 x 102) + (2 x 100) + (4 x 1/10) +(9 x 1/100)
15 x 2 - [ (36 ÷ 6) + 3]
What is 21
15 x 2 - [6 + 3]
15 x 2 - 9
30 - 9
21
If y = 15 Solve. 3(y - 7) + 2
What is 26
3(15 - 7) +2
3(8) + 2
24 +2