4 1/2 + 4/8 - 1/4 = ?
4 3/4
21 + (-16) - (-2) =
7
What is the probability of the boys in Mrs. James class winning in a race?
12:20
What point on which the lever rests ?
Fulcrum
4x7+6X5=
58
7 + (-4) - (-8)=
11
11: 15
Examples of a first class lever?
teeter totter
1/2 Divide 2/10 =
2 1/2
50 - (-22) + (-14) =
58
You have two $5 dollar bills in your wallet. You also have one $10 dollar bill and three $20 dollar bill. What is the probability of reaching into your wallet and getting a $5 dollar bill?
1:3
Example of a 2nd class lever?
Wheelbarrow
(7-6) x 5 + 15 =
20
(-34) - (-60) + 45 =
71
Using a six sided dice, what is the probability of rolling a number higher than 3?
1:2
How do you calculate mechanical advantage?
6 3/4 - 5 1/2 =
1 1/4
3 x 6 + 18 - (6) =
30
What is the probability of the girls in math class beating the boys?
8:20 or 2:5
The resistance that one surface or object encounters when moving over another?
Friction