Country populations

Country populations

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
This task is about writing numbers as whole numbers and in decimal millions.
Whare was doing some research about populations where his classmates came from. 

He found the populations for Croatia, Kazakhstan, Fiji, and Samoa.
 
a)
Whare decided to write the populations as whole numbers not decimal millions. 
Complete the table below by writing the decimal numbers as whole numbers.
  
Country Population
(whole numbers)		 Population
(decimal millions)
i)  Croatia    4 million
ii) Kazakhstan    19.9 million
iii) Fiji    0.9 million
iv) Samoa    0.26 million

   
b)
Whare also found the populations for the Philippines, Indonesia, the Solomon Islands, and the Cook Islands. These were only given as whole numbers. 
Complete the table below by writing in the populations as decimal millions.
  
Country Population
(whole numbers)		 Population
(decimal millions)
i) Turkey 85 800 000 __________ million
ii) Indonesia 277 500 000 __________ million
iii) Solomon Islands 740 000 __________ million
iv) Cook Islands 18 000 __________ million
Task administration: 
This task is completed with pencil and paper only.
Level:
4
Curriculum info: 
Maths, Number and Algebra, Number Knowledge
Keywords: 
whole numbers, place value, decimals, total value
Description of task: 
Students convert decimal millions to whole numbers and whole numbers to decimal millions.
Answers/responses: 

 

Y9 (03/2004)

a)

i)
ii)
iii)
iv)

4 000 000
19 900 000
900 000
260 000

easy
moderate
moderate
difficult

b)

i)
ii)
iii)
iv)

85.8
277.5
0.740
0.018

easy
moderate
moderate
difficult

NOTE: The most difficult decimal number was 18 000 for the Cook Islands (needing 3 decimal places).