MAT 125 Chs 1-6 Review

PEMDAS

100

The letters in PEMDAS stand for these words.

What is: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

200

When an expression has both addition and subtraction, the direction in which you apply the operations

What is: Left to right

400

Simplify: 3+5(4 x 2)

What is: 43

600

Simplify: (13 x 2(3-4)+1)

What is: -25

Exponents

100

Simplify: x⁴x⁸

What is: x¹²

200

Simplify: (x⁵)³

What is: x¹⁵

400

Simplify: X⁶Y⁰ x X³

What is: X⁹

600

16^1/2 is the same as this radical

What is: square root of 16

Significant Rounding

100

The first (lowest) integer value that indicates you should round up, instead of down

What is: 5 

200

The integer that is only significant sometimes

What is: zero

400

The scientific notation 3 x 10⁶ , as a standard form number

What is: 3,000,000 (3 million)

600

The number of significant figures in 5,000,023

What is 7 sig figs

Lines and Angles

100

A part of a line that ends at two points

What is: a line segment

200

An angle that is less than 90 degrees

What is: an acute angle

400

An angle that is greater than 90 degrees

What is: an obtuse angle

600

The point where two lines or rays intersect in an angle

What is: the vertex

Triangles

100

A triangle with a 90 degree angle

What is: a right triangle

200

A triangle with 3 equal sides

What is: equilateral triangle

400

A triangle with 2 equal sides

What is: isosceles triangle

600

A triangle with no equal sides

What is: scalene triangle