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Which of your numbers above is the largest number?

  • Now write your numbers. Begin with the largest, then the next largest, then the next largest, until you reach the smallest. This is called DESCENDING ORDER. (Moses DESCENDED from the mountain)

D escending order is when you start with the largest number and go D own

Example: 10; 9; 8; 7; 6; 5; 4; 3; 2; 1

4.2 Ascending order is when you start with the smallest and go up! Now write your numbers in ascending order. Remember to begin with the smallest:

4.3 Write these numbers from the smallest to the largest:

6 095; 9 065; 6 059; 9 506; 5 069

4.4 Write these numbers from the largest to the smallest:

8 315; 3 851; 5 318; 1 853; 8 513

5. EVEN AND ODD NUMBERS

5.1 Study the number line below:

All the numbers that have been written there are even numbers. They can be shared equally between two friends.

5.2 Between the even numbers are odd numbers. They cannot be kept whole and shared equally between two people. Fill in the names of the odd numbers on the number line below:

TEST YOUR KNOWLEDGE of odd and even numbers

a. List the even numbers between 2 800 and 2 812

b. Which odd number is just before 10 000?

c. What is the first even number after 2 998?

6. LARGER AND SMALLER

LARGER THAN / SMALLER THAN

In Mathematics, this sign>means: LARGER THAN or GREATER THAN:

This sign<means: SMALLER THAN or LESS THAN

(Remember, the crocodile always opens his mouth towards the largest number because he is so hungry!)

500>400

or 500 is greater than 400

<500

or 400 is less than 500

TEST YOUR UNDERSTANDING OF THESE SIGNS:

  • Fill in the correct sign from :<; =;>

a) 0  4 * 11 - 3

b) 13 - 6 * 0  7

c) 2  7 * 14 - 8

d) 13 - 5 * 7  4

6.2 Write down the missing number when you count in tens:

1 470<…… …………..<1 490.

7. CALCULATOR GAME

Now you may play another calculator game. Try to puzzle out what the learners are doing this time. Then play the game with your friend.

Paul keyed in 187. He keyed in one operator and pressed = and the number 1 870 appeared on the screen. What operator did he key in? Yes, it was: X 10 because 187 X 10 = 1 870.

What operator did Reyhana key in? Yes, it was also X 10 because 1 870 X 10 = 18 700.

8. Now see if you can complete this table without a calculator. Then check your answers with a friend. (If you get stuck you may use a calculator.)

Number Operator Answer
58 X 100
145 X 10
309 3 090
20  10
1 000 10 000
520 52
1 690  10
1 000  100
10 000  10

1 6 329

Hello! I am called Six Thousand. I am part of a very large number, which is: Sixteen thousand three hundred and twenty-nine.

9. Now write down the value of the digit that has been printed in bold type:

3 421

8 035

9 2 6

1 4 051

Now let us look at the number 2 8 4 8 .

The 8 on the left means 800. The 8 on the right means 8.

What is the difference between the values of the two 8s?

800 - 8 = 792

10. Now calculate the difference between the value s of the numbers that have been made bold and underlined:

7 3 7 4

6 99 5

3 02 3

5 5 19

1 0 0 1 0

11. Now you may play a “place value” game with a friend and a calculator. This will strengthen your understanding of “place value”. It is important to play this game.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Read about ancient clocks like_ hour glass, water clock and sun dial for a quiz and hand on Activity in the class
Neha Reply

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Source:  OpenStax, Mathematics grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11101/1.1
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