<< Chapter < Page Chapter >> Page >
1.3 2 648 ÷ 42 1.4 9 850 ÷ 50
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................

2. Now use any method of your choice and calculate:

2.1 15 350 ÷ 45 2.2 32 648 ÷ 28
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. ..................................................
.................................................. .................................................
.................................................. .................................................

Assessment

Learning outcomes(LOs)
LO 1
Numbers, Operations and RelationshipsThe learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.
Assessment standards(ASs)
We know this when the learner:
1.2 describes and illustrates various ways of writing numbers in different cultures (including local) throughout history;
1.3 recognises and represents numbers in order to describe and compare them:
1.3.6 multiples of single-digit numbers to at least 100;
1.3.7 factors of at least any 2-digit whole number;
1.6 solves problems in context including contexts that may be used to build awareness of other Learning Areas, as well as human rights, social, economic and environmental issues;
1.6.1 financial (including buying and selling, profit and loss, and simple budgets);
1.8 estimates and calculates by selecting and using operations appropriate to solving problems:
1.8.1 rounding off to the nearest 5, 10, 100 or 1 000;
1.8.4 multiplication of at least whole 3-digit by 2-digit numbers;
1.8.5 division of at least whole 3-digit by 2-digit numbers;
1.9 performs mental calculations:
1.9.2 multiplication of whole numbers to at least 10 × 10;
1.10 uses a range of techniques to perform written and mental calculations with whole numbers:
1.10.1 adding and subtracting in columns;
1.10.4 doubling and halving;
1.10.5 using a calculator;
1.11 uses a range of strategies to check solutions and judge the reasonableness of solutions;
1.12 recognises, describes and uses:1.12.1 the reciprocal relationship between multiplication and division (e.g. if 5 × 3 = 15 then 15  3 = 5 and 15  5 = 3);1.12.3 The commutative, associative and distributive properties with whole numbers (the expectation is that learners should be able to use the properties and not necessarily know the names).
LU 2
Patterns, functions and algebraThe learner will be able to recognise, describe and represent patterns and relationships, as well as to solve problems using algebraic language and skills.
We know this when the learner:
2.2 describes observed relationships or rules in own words;
2.6 determines, through discussion and comparison, the equivalence of different descriptions of the same relationship or rule presented:
  • verbally;
2.6.3 by number sentences.

Memorandum

ACTIVITY 1

3.1

34
2 4 4 6 2 7

3.2

61
Res 1 1 5 5 6 1

4. 4.1 20 4.11 72

4.2 48 4.12 54

4.3 6 4.13 306

4.4 9 4.14 243 1 2 size 12{ { { size 8{1} } over { size 8{2} } } } {}

4.5 56 4.15 518

4.6 72 4.16 36

4.7 7 4.17 48

4.8 70 4.18 12

4.8 7 4.19 9

4.10 70 4.20 40

ACTIVITY 2

1.1 26 26

1.2 30 30

ACTIVITY 3

1.1 5

1.2 86

1.3 359

1.4 4 625

1.5 32 174

2. When any number is divided by 1, the answer always remains the number

BRAIN TEASERS

1 5 size 12{ { { size 8{1} } over { size 8{5} } } } {}

1 86 size 12{ { { size 8{1} } over { size 8{"86"} } } } {}

1 359 size 12{ { { size 8{1} } over { size 8{"359"} } } } {}
1 4625 size 12{ { { size 8{1} } over { size 8{"4625"} } } } {}

Fractions

3. 3.1 O E 3.2 O E

3.3 O E 3.4 O E

3.5 O E

4. Shows “Error” (Answer is incorrect)

BRAIN TEASERS

45

216

ACTIVITY 4

1.1 a) 10

  1. 10
  2. 3
  3. 25
  4. 20
  5. 14 rem 2

14 2 7 size 12{ { { size 8{2} } over { size 8{7} } } } {}

ACTIVITY 5

1.

2 5 9 12 147 256 1 438 2 652

O falls away. Each number moves one place to the right.

2.

3 8 12 26 147 325

2 Noughts fall away. Each number moves two places to the right.

3.

5 7 13 45 126 382

3 Noughts falls away. Each number moves three places to the right.

2. 2.1 = (1 380 size 12{ div } {} 110) size 12{ div } {} 6

= 138 size 12{ div } {} 6

= 23

2.2 = (32 840 size 12{ div } {} 10) size 12{ div } {} 4

= 3 284 size 12{ div } {} 4

= 821

2.3 = (15 500 size 12{ div } {} 100) size 12{ div } {} 5

= 155 size 12{ div } {} 5

= 31

2.4 = (312 300 size 12{ div } {} 100) size 12{ div } {} 3

= 3 123

= 1 041

3. 3.1 = 105 size 12{ div } {} 3 size 12{ div } {} 7 3.2 = 216 size 12{ div } {} 4 size 12{ div } {} 6

= 35 size 12{ div } {} 7 = 54 size 12{ div } {} 6

= 5 = 9

3.3 = 432 size 12{ div } {} 8 size 12{ div } {} 3 3.4 = 126 size 12{ div } {} 2 size 12{ div } {} 7

= 54 size 12{ div } {} 3 = 63 size 12{ div } {} 7

= 18 = 9

5. 5.1 = (3 000 + 45 ) size 12{ div } {} 15

= ( 3 000 size 12{ div } {} 15) + ( 45 size 12{ div } {} 15

= 200 + 3

= 203

5.2 = (2 000 + 500 + 75 ) size 12{ div } {} 25

= (2 000 size 12{ div } {} 25) + ( 500 size 12{ div } {} 25 ) + ( 75 size 12{ div } {} 25 )

= 80 + 20 + 3

= 103

ACTIVITY 8

1.

a) 2
b) 6
c) 20
d) 175
e) 400

ACTIVITY 12

186 250

1.1 25 4650 ¯ size 12{"25" {\lline overline "4650"} } {} 1.2 21 5250 ¯ size 12{"21" {\lline overline "5250"} } {}

-25 -42

215 105

-200 -105

150 0

-150 -0

.

1.3 63 1.4

197

50 9850 ¯ size 12{"50" {\lline overline "9850"} } {}
-50 485 -450 350 -350 42 2648 ¯ size 12{"42" {\lline overline "2648"} } {}

-252

128

-126

2

63 rem 2

2.1 341 rem 5 2.2 1 166

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
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
Berger describes sociologists as concerned with
Mueller Reply
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Mathematics grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10994/1.3
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Mathematics grade 5' conversation and receive update notifications?

Ask