Lesson 3

1. The area of Paraguay
is 406 752 km2.
The area ofJapan
ls 377 835 km2.
Ys* can show
these numbers
on a number line.
Which country
has the greater area?
How do you know?
3?7 8S5 4$67S1
:e50 000 400000 450000
l&e this table that shows the areas of l0 countries.
i$iaw a place-value chart you can use to record
i,*ileh nurnber.
Partner A finds the greatest number
.,,in the teble and, r.eads it aloud.
i:F,artner B records the nurnber in a
lBlace-value chart.
,',P,,artner B finds the next greatest number
qnd,reads it alcud.
rtner A records the number in the
iue chart.
ue untilthe numbers are in srder
{fI} greatest t0 least.
lffthe countries fronr great€st area
i.i St afea.
l Cornpare snd order whole numbers. 3$

2. Sho rm,J,,t;r"i::.# S he re
Share your results with another pair of students.
How did ycu know how many columns to put
in your place-value chart?
How did you labelthe columns?
What strategies did you use to choose the numbers?
Where would Paraguay's area fit in the ordered list?
Where would Japank area fit?
Here is a table showing the areas of
3 more countries"
Country Area {kmz}
Colombia 1 138 S't0
South A{rica 1 219 912
Thailand 514 000
You can use a place-value chart to order
the areas from greatest to least.
Millions Thousands Units
Ccuntry Hundreds Tens Ones Hundreds Tens Ones Hundreds Tens Snes
Colombia 1 .l B I 1 0
South Africa 1 2 1
o I 1 2
Thailand 1 4 U o s
I
Both 1 219 912 and 1 't38 910 have 1 million. 514 000 has no millions.
1 219 912 has 2'19 thousands. It is the least number"
1 138 910 has 138 thousands.
$o, 1 219 912 is the greatest number.
5o,1 219912 > 1 138910> 514000
The areas from greatest ta least are:
1 219 9t 2 kmz, 1 138 910 km2, 514 000 kmz
The order of the countries from greatest to least area is:
South Africa, Colombia, Thailand
d*o Unif 2 Lesron 3

3. S*ctsl $tsdies
Japan is one ol Canada's trading partners.
ln 2il01, the value of Japank exports was
U$$403 49S millisn. That year, Canada's
*xports were worth U$$259 858 million.
Copy and complete. Replace each il
with > or <.
a! r1 208464.n9289500 b) 83617f] 1 327090
cl 50985 362J27 fr41 dl 2004CI23f 385008
ilrder these numbers fr*m least to greatest"
59s 032 46',t 99 426 322 3 217 XA
&4 620 i 300 1?4 68s428
The table shows estimates of the populations
cf some cities in ?015.
City Expectad Population
in 2015
ilhaka (Bangladash) ?2 766 000
Murnbai {lndia} 2P 577 000
Tokyo {Japan} 27 190 000
Why do you think the expected population
numbers are rounded?
Which of these cities is expected to have the
greatest population in 2015? The least?
How do you know?
4. Use the digits 1,2,4,6,V,8,and 9 once in each nurnber.
Write five 7-digit numbers between I000 000 and 9 000 000.
Order the nurnbers fronn least to greatest.
What strategies did you use to form the numbers?
Could you write more than 5 numbers? Explain.
Unit2 Lesson3 4l

4. h
t
!F
iT 5. This table shows the approximate areas of the oceans of the world'
ig
i{
Order the oceans from
greatest to least area.
Clayton and Olivia played a computer game'
olivia,s final score was 2 306 421 and clayton's was 2302972.
Show these numbers on a number line.
Whose score was greater? How do you know?
The table shows the approximate populations
Province Population
of some Canadian provinces in 2002.
al Which of these Provinces had the Alberta 3 113 600
least population? The greatest population? British Cotumbia 4 141 300
bi Which of these provinces had a population Manitoba 1 150000
greater than 1 million? Less than 1 million? New Brunswick 756 700
cl Which province had a population of about Newfoundland
4 million? About half a million? and Labrador 531 6m
dl Saskatchewan's population in 2002 Nova Scotia 944 8CI0
was 1 011 800. Ontario 12 068 300
Which province's population was about
3 times that of Saskatchewan?
8. How many different ways can you replace [J with
a digit so each statement is true?
Show your work-
al 3 267 001 < 3 n34 379
bl 6 481 736 > 6 f]82 159
Nqmber trategla* :
0rder these decimels fr.om
leastto greatest,
Manitoba's population was 1 123 900 in 1994,
g.jls, 4.9s, 6-49,
and 1 1 19 583 in 2001.
6,94, 9.64, 4.s9
Did the population increase or decrease
between these Years? How do You know?
42 Unit 2 [e*so