Show:
Basic Number Theory
Angles
GEOMETRY! (Triangles, Quadrilaterals, Polygons, Circles)
Fractions, Decimals, and Percents
Proportions
100
Which of the following is a prime number? 12, 21, 27, 23, 51
23
100
Which angles are congruent? picture on board
1=4=5=8 2=3=6=7
100
What is a polygon? What is a regular polygon?
A polygon is a closed, 2-dimensional shape that has straight sides. A regular polygon is one that has all congruent sides and angles.
100
Which of the following is closest to 45% of 45? a) 1/2 of 45 b) 1/5 of 100 c) 1/4 of 81 d) 1/3 of 81
45% of 45 = 20.25 a) 1/2 of 45 = 22.5 b) 1/5 of 100 = 20 c) 1/4 of 81 = 20.25 is closest d) 1/3 of 81 = 27
100
The ratio of pigs to badgers to tapirs at the zoo is 4:9:1. If there are 126 pigs, badgers, and tapirs total, how many badgers are there?
36 badgers
200
Which of the following is a multiple of 3 and a multiple of 2? 91, 140, 153, 186, 211
186
200
Find the measure of angle T. picture on board
T=25º
200
What is the area and perimeter of the figure? picture on board
Area=90+9π Perimeter=30+6π
200
In a pet shop, 1/3 of pets are dogs. 7/12 are gerbils, and the rest are lizards. What percent of the pets are lizards?
8.3% are lizards
200
If 4/7 of R is 32, what is 1/4 of R?
14
300
Two odd integers and one even integer are multiplied together. Which of the following could be their product? 1.5, 3, 7.2, 15, 6
6
300
What is the sum of the interior angles of a pentagon?
180º(n-2)= 180º(5-2)=540º
300
What is the greatest number of squares, each measuring 3 cm by 3 cm, that can be cut from a rectangle that has length 15 cm and width 6 cm?
10
300
Two-thirds of a candy bar contains 12 grams of sugar. How much sugar is in five-sixths of the candy bar?
15 grams
300
If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
5:3
400
If a, b, and c are each greater than 1, which of the following expressions will be negative? a. a - b b. b - c c. a - b - c d. 1 - c
d. 1 - c
400
Find the measures of angles a, b, c, d, e, and f. picture on board
a=70º, b=45º, c=65º, d=45º, e=70º, f=110º
400
What is the area and perimeter of this figure? picture on board
Area=144+72π Perimeter=24π
400
(1/6) x 0.72= ?
.72 or 3/25
400
Triangles ELK and CAT are similar. Find the values of x and y. picture on board
x = 90/8 or 11.25 y = 40
500
If x < 0, and |x| < 5, which of the following is the smallest? The greatest? a. x - x b. x - (-5) c. x + 1 d. x - 10
Greatest: b. x - (-5) Smallest: d. x - 10
500
Find the measures of angles c and d. picture on board
C=25º, D=65º
500
What is the area and perimeter of the triangle? picture on board
Area: .5(12)(21)=126 sq. in. Perimeter: 49 in
500
Which of the following is less than 4/9? 2/3, 16/18, 21/27, 18/54
18/54
500
The sum of three numbers is 98. If the ratio of the first to second is 2:3 and that of the second to the third is 5:8, then the second number is...?
30