Maths Yr 10

Question 1

How do you do compound interest?

Answer 1

Starting number x 1.0(percentage)=answer

Question 2

What do the exterior angles of a polygon add up to?

Answer 2

360 degrees

Question 3

Index laws rules

Answer 3

G^5 + G^2 = G^7

H^6/H^2= H^4

(K^4)^2 = K^8

Question 4

How to factorise

Answer 4

A^2 + BX + C

+/- to make B
x to make C

Question 5

Area of a circle

Answer 5

|-|R^2

Question 6

Circumference

Answer 6

|-|d

Question 7

Area of a sector

Answer 7

X/360 x |-| x R^2

Question 8

Length of an arc

Answer 8

X/360 x |-| x d

Question 9

Area of trapezium

Answer 9

1/2(a+b)h

Question 10

Area of a parallelogram

Answer 10

Base x height

Question 11

Area of triangle

Answer 11

Base x height
______________
2

Question 12

Volume of prism

Answer 12

Area of cross section x depth

Question 13

What is pythagoras’ theorem

Answer 13

a^2+b^2=c^2

Question 14

Volume of a pyramid

Answer 14

Area of base x height
______________________
3

Question 15

Volume of a cone

Answer 15

|-| x r^2 x h
____________
3

Question 16

Surface area of sphere

Volume of a sphere

Answer 16

4 x |-| x r^2

4 x |-| x r^3
____________
3

Question 17

Volume of prism

Answer 17

Arc of cross section x height

Question 18

Volume of cylinder

Answer 18

|-| x r^2 x h

Question 19

Gradient

Answer 19

Change in y
_____________
Change in x

Question 20

Straight line equation

Answer 20

Y=Mx+C