Exercise Summative 4

 

1.      a.  Find 120% of 80 kg. _____________________________________________________ [1]

b.      Find 0.5% of 5000 litres. ________________________________________________  [1]

2.      a. Write $40 as a percentage of $60. __________________________________________ [1]

        b. Write 45 g as a percentage of 20 g. ________________________________________ [1]

3.      a. Increase 180 by 15%. ____________________________________________________ [1]

b. Decrease 400 by 50%. __________________________________________________ [1]

4. The mass of a child increases from 15.0 kg to 17.2 kg. Work out the percentage increase.

________________________________________________________________________

________________________________________________________________________[2]

5.      The population of a town increases from 30 000 to 80 000. Work out the percentage change.

________________________________________________________________________

________________________________________________________________________[2]

6.      a. Write 2 metres as a percentage of 50 cm. ____________________________________[1]

b. Write 60 minutes as a percentage of 4 hours. _________________________________ [1]       

7.      The price of a TV is reduced by 60%. After the reduction, the price is $180. Circle the price before the reduction from this list.

 

$ 410                              $250                            $450                                          $350          [1]