math facts
99/11
9
read this decimal 62.3
62 and 3 tenths
Write this decimal. (3x10) + (6x1/10) + (6x1/100) + (5x1/1000)
30.665
A straight figure that goes on forever in both directions.
line or straight line
Angle that measures 180 degrees exactly
Straight Angle
12x12
144
Read this decimal. 453.1.
Four hundred fifty three and 1 tenth
Write this decimal (8x100) + (5x10) + (4x1) +(5x1/100) + (2x1/1000)
854.052
Has one endpoint and goes on forever in just one direction.
Ray
An angle that is greater than 90 degrees.
Obtuse Angle
21x6
126
Read this decimal. 950.95
Nine hundred fifty and 95 hundreths.
Write this decimal in expanded form. Five hundred three and four tenths.
(5x100) + (3x1) + (4x1/10)
Two line segments that cross each other.
Intersecting lines
Angle that is exactly 90 degrees.
Right Angle
72x3
216
Read this decimal. 2.971
Two and nine hundred seventy-one thousandths.
Write this in expanded form. Eighty-six and seventy-seven hundredths.
(8x10) + (6x1) + (7x1/10) + (7x1/100)
Two line segments that stay the same distance apart from each other.
Parallel lines.
Angle that is less than 90 degrees is
Acute Angle
52x5
260
Read this decimal. 672.545
Six hundred seventy-two and five hundred forty-five thousandths.
write this in expanded form: three hundred ninety-seven and four hundred eighty-two thousandths
(3x100) + (9x10) + (7x1) + (4x1/10) + (8x1/100) + (2x1/1000)
Two line segments that cross each other at a 90 degree angle.
Perpendicular line.
Put this fraction in simplest form 3/27
1/9