YR 11 SMK 2021 (Maths D Revision)

YR 11 SMK 2021 (Math D Revision)

by Teacher Henny

​Monday 20th Sept 2021

​LO: to be familiar with exam typed questions.

​S2S:

recall ratio of numbers

recall circle theorems​

​recall inequalities

​recall functions and inverse functions

Multiple Choice

Calculate  $$\left(7\times10^{-3}\right)\times\left(3\times10^9\right)$$  

giving your answer in standard form

• $$21\times10^6$$  

• $$2.1\times10^7$$  

• $$2.1\times10^{-7}$$  

• $$21\times10^{-6}$$  

Multiple Choice

Solve the simultaneous equations $$2x+3y=0$$  

$$x+4y=-15$$  

• $$x=6,\ y=9$$  

• $$x=-9,\ y=6$$   

• $$x=-6\ ,\ y=9$$  

• $$x=9\ ,\ y\ =-6$$  

Multiple Choice

Each interior angle of a regular polygon is p times each exterior angle. Find an expression, in terms of p, for an exterior angle.

• $$\left(p-2\right)180$$

• $$\frac{360}{p}$$

• $$\frac{180}{p+1}$$

Multiple Choice

The triangles ABC and XYZ are similar and $$\angle ABC=\angle XYZ$$   $$\angle BAC=x^o\ ,\ \angle YZX=y^o,\ where\ x\ne y$$  

Find  $$BC$$  

• $$2\frac{2}{5}$$  

• $$3\frac{3}{4}$$  

• $$6\frac{2}{3}$$  

• $$5\frac{3}{4}$$  

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Multiple Choice

It is given that  $$f\left(x\right)=\frac{3+x}{2}$$  . Find  $$f^{-1}\left(x\right)$$  

• $$2x+3$$  

• $$x-3$$  

• $$x-\frac{3}{2}$$  

• $$2x-3$$  

Multiple Choice

$$2\left(4-x\right)<x-10$$  

Solve the inequality

• $$x>6$$  

• $$x<6$$  

• $$2<x$$  

• $$2>x$$  

Multiple Choice

By writing each number correct to two significant figures, estimate, correct to one significant the value of $$\sqrt{110.94-0.2034\times368.62}$$  

• $$\pm4$$   

• $$\pm6$$  

• $$\pm5$$   

• $$\pm7$$  

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