Skills that are commonly tested at Grade B€¦ ·  · 2014-12-02The graph shows the cost of gas...

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Skills that are commonly tested at Grade B on the Higher Level Paper Cumulative Frequency (a) Copy and complete the cumulative frequency table. (b) Draw a cumulative frequency diagram for your table. (c) Use the graph to find an estimate for the number of repairs which cost more than £700 (Total 6 marks) Rearranging Formulae Rearrange y = p –2qx 2 to make x the subject of the formula. (Total 3 marks) Solving Quadratics The diagram shows the graph of y=x 2 –5x –3 Use the graph to find estimates for the solutions of (i) x 2 –5x –3=0 (ii) x 2 –5x –3=6 (Total 3 marks) Simultaneous Equation Solve the simultaneous equations 3x +4y = 200 2x +3y = 144 (Total 4 marks) Factorising and Solving Quadratics (a) Factorise 2x 2 –9x +4 (b) Hence, or otherwise, solve 2x 2 –9x + 4 = (2x – 1) 2 (Total 3 marks) Circle Theorems AB is a diameter of a circle. C is a point on the circle. D is the point inside the circle such that BD = BC and BD is parallel to CA. Find the size of angle CDB. You must give reasons for your answer. (Total 4 marks) Standard Index Form (a) Work out the value of (6 × 10 8 ) × (4 × 10 7 ) Give your answer in standard form. (b) Work out the value of (6 × 10 8 ) + (4 × 10 7 ) Give your answer in standard form. (Total 3 marks)

Transcript of Skills that are commonly tested at Grade B€¦ ·  · 2014-12-02The graph shows the cost of gas...

Page 1: Skills that are commonly tested at Grade B€¦ ·  · 2014-12-02The graph shows the cost of gas from GasCo. £C is the cost of the gas and n is the number of units of gas used.

Skills  that  are  commonly  tested  at  Grade  B  on  the  Higher  Level  Paper      

Cumulative  Frequency  (a)  Copy  and  complete  the  cumulative  frequency  table.    

 (b)  Draw  a  cumulative  frequency  diagram  for  your  table.  (c)  Use  the  graph  to  find  an  estimate  for  the  number  of  repairs which  cost  more  than  £700

     (Total  6  marks)  

Rearranging  Formulae  

Rearrange  y  =  p  –  2qx2  to  make  x  the  subject  of  the  formula.  

(Total  3  marks)  

 

Solving  Quadratics  

The  diagram  shows  the  graph  of  y  =  x2  –  5x  –  3  

 

Use  the  graph  to  find  estimates  for  the  solutions  of    

(i)  x2  –  5x  –  3  =  0  

(ii)  x2  –  5x  –  3  =  6    (Total  3  marks)  

Simultaneous  Equation  Solve  the  simultaneous  equations  

3x  +  4y  =  200  2x  +  3y  =  144  

 (Total  4  marks)    

Factorising  and  Solving  Quadratics  

(a)  Factorise      2x2  –  9x  +  4  

(b)  Hence,  or  otherwise,  solve  

2x2  –  9x  +  4  =  (2x  –  1)2  

 (Total  3  marks)  

Circle  Theorems  

 AB  is  a  diameter  of  a  circle.  C  is  a  point  on  the  circle.  D  is  the  point  inside  the  circle  such  that  BD  =  BC  and  BD  is  parallel  to  CA.  Find  the  size  of  angle  CDB.  You  must  give reasons  for  your  answer.

 (Total  4  marks)  

Standard  Index  Form  

(a)  Work  out  the  value  of  (6  ×  108)  ×  (4  ×  107)  Give  your  answer  in  standard  form.  

(b)  Work  out  the  value  of  (6  ×  108)  +  (4  ×  107)  Give  your  answer  in standard  form.

(Total  3  marks)  

Page 2: Skills that are commonly tested at Grade B€¦ ·  · 2014-12-02The graph shows the cost of gas from GasCo. £C is the cost of the gas and n is the number of units of gas used.

 Inequalities  and  regions  On  the  grid  draw  lines  to  show  the  region  satisfied  by  the  three  inequalities.  x+

x ≤ 4 y ≤ x

x+y ≥ 4

Label the region clearly with the letter R.

   (Total  3  marks)

 Box  and  Whisker  Diagrams  The diagram shows a box plot.

 (a) Write down the median. (b) Work out the interquartile range.

 (Total  2  marks)

Interpreting  Real  Life  Graphs  (Functional)  

 The graph shows the cost of gas from GasCo. £C is the cost of the gas and n is the number of units of gas used.

Use the graph to obtain a formula for C in terms of n.

 (Total  3  marks)  

Percentages  

A car is advertised for £3000. The car will be in a sale next month.

Tom can afford to pay £2500. By what percentage will the price have to be reduced so that he can afford the car?

 (Total  4  marks)

 

Trigonometry  Here  is  a  right-­‐angled  Triangle  

   (Total  3  marks)

 

Reverse  Percentages    In  a  sale  normal  prices  are  reduced  by  20%.  A  washing  machine  has  a  sale  price  of  £464  By  how  much  money  is  the  normal  price  of  the  washing  machine  reduced?    

 (Total  3  marks)

Similar  Shapes  

 Triangle  ABC  is  similar  to  triangle  ADE.  AC  =  15  cm.    CE  =  6  cm.  BC  =  12.5  cm.  Work  out  the  length  of  DE.  

     (Total  3  marks)  

Problem  Solving  Volume  Question  The diagram shows a solid metal cylinder.

 (Total  4  marks)

 

The   cylinder   has   base   radius   2x  and  height  9x.  The  cylinder   is  melted   down   and  made  into  a  sphere  of  radius  r.  Find an expression for r in terms of x.  

Calculate  the  size  of  angle  marked  x.  Give  your  answer  correct  to  1  decimal  place.