Calculations
28 x 13
364
Simplify
6a x 5a
30a2
What is the formula for area of a rectangle?
10/15 or 2/3
Write 1/4 as a percentage.
25%
45.1 - 23.5
21.6
Expand
3(2x + 1)
6x + 3
What is the formula for area of a triangle?
A = 1/2 x b x h
What is the probability of rolling an even number on a dice?
3/6 or 1/2
Work out 20% of $60
$12
468 divided by 3
156
Simplify
3x + 2y - 4x + y
-x + 3y
What is the formula for Pythagoras theorem?
a2 + b2 = c2
23 pens are red
17 pens are blue
10 pens are green
I pick a pen at random. What is the probability of not picking a green?
40/50 = 4/5
Decrease £360 by 15%
£306
1/3 + 2/6
Simplify your answer
2/3
Solve
3x + 15 = 45
x = 10
What is the formula for speed of an object?
Speed = distance/time
The probability of Barry winning a football game is 0.3.
The probability of Barry drawing and losing the game is equal. Work out the probability of Barry drawing the game.
0.35
Jenna got 36 out of 90 on a maths test. Work out this score as a percentage.
40%
Jim thought of a number. He doubled it and added nine. The answer was forty nine. What number did he think of?
20
Solve
3x + 10 = x - 5
x = -7.5
What is the formula for circumference of a circle?
C = pi x d
Here are some numbers:
1, 5, 8, 2, 8, 3, 2, 10, 25, 4
I pick a number at random. What is the probability of picking a prime or square number in its simplest form?
3/5
£2000 is invested into a bank, paying 3% compound interest. Work out the value after 4 years.
£2251.02