Number
Daisy mixes 50ml of orange juice with 200ml of water.
Write down the ratio of water to orange juice.
Give your answer in its simplest form
4:1
Expand & simplify
2(x + 3) + 5(x - 3)
7x - 9
Fill in the blank for the circle theorem:
"The angle at the ________ is half the angle at the _______"
The angle at the circumference is half the angle at the centre
Simplify √20
2√5
In a bag of counters, the probability of picking a white counter is 0.2. What is the probability of not picking a white counter?
0.8
Write 50cm as a fraction of 2m
Give your answer in its simplest form
1/4
Solve
3x − 3y = 9
2x + y = 12
x = 5
y = 2
What two things do you need to plot a frequency polygon?
Midpoint and frequency
Work out (√7)² - in its simplest form
7
Find the median from the list of numbers
6, 2, 8, 1, 7, 9
6.5
9 / 500
Write down the quadratic formula
(-b ± √b2 - 4ac)/2a
Find the area of a trapezium where a=2cm, b=4cm and h=10cm. Include units.
30cm2
Simplify 15√32
60√2
What information do you need to draw a box plot?
Minimum, maximum, lower quartile, upper quartile, median
Write the reciprocal of -2/7 as a decimal
-3.5
(x + 4)2 - 10
When y = f(x) the point A is (4, 6)
What is A when y = (x + 4) + 3
(0, 9)
The base of a right-angled triangle is √30, the height is √12
Find the hypotenuse of the triangle.
√42
Speed: 40 < s < 55
Frequency: 6
Work out the frequency density
0.4
Evaluate 64-2/3
1/16
Solve
4x² + 12x − 7 = 0
x = -3½ and x = ½
Draw the three types of graphs on your whiteboards:
1) Straight line graph, 2) Quadratic graph, 3) Reciprocal graph
Answer on board.
Rationalise 4 / 1 + √5
-1 + √5
Beth catches a sample of 80 frogs, marks them and puts them back in the lake. Later that day, in a second sample of 80 frogs, she finds that 10 of them are marked. Work out an estimate for the number of frogs in the lake.
640