Year 7 Maths
(-3) + 2 x (-2) =
(-3) + (-4) = -7
Name all the Measures of Central Tendency
Mean, Median, Mode (Range, optional)
Solve for x:
3x + 12 = 4x + 5
x = 7
The saying '______ wasn't built in a day' is said about what city?
Rome
What metal is commonly used for wiring?
Copper
What is this symbol in maths, and what does it mean mathematically, and give an example.
!
It is a 'factorial'. It indicates that a number is multiplied by every integer (whole number) less than it.
i.e.: 3! = 3 x 2 x 1 = 6
Solve this inequality:
3x - 5 > 2
x > 7/3
Write all three trigonometric ratio equations.
Sin(theta) = O/H
Cos(theta) = A/H
Tan(theta) = O/A
*theta could be replaced with any variable, or 'angle'
Central Processing Unit
What is the largest organ in the body?
The liver
What is the sum of the internal angles of a pentagon?
540o
a3 x a-2 x a-1 =
0
Expand:
(x - 3) (x + 5)
x2 + 2x - 15
What artform is concerned with decorative handwriting?
Calligraphy
What does FIFA stand for, in English?
International Federation of Association Football
Rahul and Sean take the same test.
Rahul scores 3/4 of the maximum mark.
Sean scores 2/3 of the maximum mark.
Rahul scores 6 more marks than Sean.
What was the maximum mark?
3/4 - 2/3 = 9/12 - 8/12
= 1/12
6 marks makes 1/12 of the test.
Total marks are 6 x 12 = 72 marks
If the mean is greater than the median, what does that say about the skewness of a data set?
It is positively (or right-)skewed.
There is a tree standing 45 m away from you.
Using a laser measure, you find the direct distance between your feet, and the very top of the tree is 102 m.
Draw a diagram, and find how tall the tree is. (2 d.p.)
[A right-angle triangle, with the hypotenuse marked as 102, and the bottom side marked as 45]
1022 = 452 + h2
h = SQRT(1022 - 452)
= 91.5368778.... m
What is the highest-rated movie of all time, according to IMDb?
The Shawshank Redemption (1994)
What is the most common gas in the atmosphere?
Nitrogen
What was the most-streamed program on Netflix in 2021?
Squid Game
Which country has the most official languages in daily use?
South Africa with 12 official languages