Algebra
If y + 10 = 25, what is y?
y is 15!
What is 1/2 + 1/4?
3/4
A triangle with no equal sides or angles is called...
How do you find the perimeter of any shape?
Add all the sides together.
100 x 10
1,000
How are expressions and equations different?
Equations show the equals sign to show that one expression is the same as another. Expressions do not show this.
4 x 3/10 = ?
12/10 or 1 and 1/5
A 3D shape with 6 faces with equal sides is...
a cube
How do you find the area of a rectangle?
length x width
45 x (2 + 8)
450
What are the whole number possible values for a and b if a x b = 12?
6 and 2, 2 and 6, 4 and 3, 3 and 4
Find the simplest equivalent fraction for 9/72
1/8
What is the meaning of 'parallel'?
Lines that will never meet or crash into each other
How do you find the area of a triangle?
half of base x perpendicular height
A box fits 50 packs of cards. How many boxes will you need to pack 960?
20 boxes
20 x 50 = 1,000 boxes. 19 boxes won't be enough.
100 - 10x = 60. What is x?
x is 4
100 - (10 x 4) = 60
What is 2/5 as a decimal?
0.4
If an isosceles triangle has one angle of 30 degrees, and another of 75 degrees, what is the missing angle?
75 degrees. Because all angles add up to 180 in triangles, and isosceles triangles have two angles of the same size.
If a triangle has an area of 20cm2 and a base of 5cm, what is the missing value?
8
5 x 8 = 40, 40 divided by 2 equals 20
A basketball team scores 140 points in 7 games, what was their average?
20 points per games.
Which expression could show this situation:
A coach already filled w water bottles, he then fills up 10 more, but drops 3 and they spill. Which simplified expression could show how many water bottles he filled?
w + 7
9/10 - 0.75. Write it as the simplest fraction.
15/100 --> 3/20
All angles in a 4 sided shape add up to...
360 degrees
Give one example where the perimeter is smaller than the area of a rectangle.
various answers, some include a perimeter of each side being 5cm, then 5 x 5 = 25 cm2
If you multiply every number on a telephone, what is the answer?
0