Rates & Ratios
Proportions
Indirect Measurement
Trig!
Math Riddles
100
What are the three ways that ratios can be expressed?
a:b
a/b
a to b
100
A proportion is an equation stating that two ratios are ________.
equal
100
In similar figures, corresponding angles are _________ and corresponding sides are proportional.
congruent
100
What does SOHCAHTOA stand for?
sine=opp/hyp
cosine=adj/hyp
tangent=opp/adj
100
What number greater than 0 can you take the square root of and it be the same numnber?
1
200
A rate is a type of ratio that compares quantities in two different _____.
units
200
Name one strategy you can use to solve a proportion.
cross multiplication
200
In the figure below, which side is similar to DE?
YZ
200
What is the sine, cosine, and tangent of angle A?
sin=a/h
cos=b/h
tan=a/b
200
What is a math teacher's favorite dessert?
Pi!
300
A unit rate always has a denominator of:
1
300
Do the ratios form a proportion?
11/18 and 22/32
no
300
What is the measure of angle R? Angle Y?
R=50
Y=70
300
Find the tangent ratio of angle B:
8/15
300
How do you go from 98 to 72 with just one letter?
Add an x between the 9 and 8
9x8=72
400
If you pay $21.60 for a dozen roses, how much are you paying per rose?
$1.80
400
Solve the proportion:
6/10=x/15
9
400
On a map, the distance from Abilene, TX and Houston TX is 2 inches. With a scale factor of 1 in:150 miles, how far is Abilene from Houston?
300 Miles
400
Find the missing side length:
cosine=25/x
29.5
400
When my father was 31, I was 8. Now he is twice as old as me. How old am I?
23
500
Apollo 11 was the first manned spacecraft to land on the moon. The rocket traveled about 237,000 miles in 103 hours. The Apollo 12 traveled 237,000 in 123 hours. What was the average speed of each rocket?
Apollo 11: 2301 mph
Apollo 12: 1927 mph
500
Solve the proportion:
6/9=(x+4)/12
4
500
Riley is 2 meters tall. His shadow is 5 meters long. The shadow of a nearby tree is 20 meters long. How tall is the tree?
50 feet tall
500
Find the missing side length:
sine(50)=x/9
6.9
500
Add me to myself and multipy by 4, divide me by 8 and you'll have me once more... What number am I?
any number