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weeks 1 2 3 4 5 6 7 8 9 10
school days 5
  • Bonny and Tommy can climb up the number ladder as far as 1 000 or down as far as –100.
  • Count forwards in hundreds, and then back again:

100 200 _____ _____ _____ _____ _____ _____ _____ 1 000

1 000 900 _____ _____ _____ _____ _____ _____ _____ 100

  • Sometimes Bonny and Tommy use diagrams to represent numbers.
  • What will happen if you add another hundred to each one of these numbers?

_____ + 100 = _____ _____ + 100 = _____ _____ + 100 = _____

  • Bonny and Tommy have hidden a number sentence among the numbers in this block.
  • Find all the numbers between 300 and 400 and colour the squares with an ordinary pencil.
200 315 178 612 144 447 162 333 554 128 419 304 109
155 301 290 422 515 167 298 303 818 422 191 320 715
524 321 188 661 176 325 327 329 336 340 222 348 199
432 350 569 351 208 184 529 357 177 282 555 363 999
191 362 365 369 370 171 284 375 286 612 444 377 813
946 914 755 384 123 456 678 789 800 876 753 531 179

1. Have you found it? Write it down and complete it: _____________________


2. Now add two noughts to each number and write the new number sentence.


3. Find all the numbers in the block with 2 hundreds and write them down here:

_______ _______ _______ ______ ______ ______ ______ ______

4. Arrange them from the most to the least:

_______ _______ _______ ______ ______ ______ ______ ______

5. Fill in the missing numbers:

205 206 207 _____ _____ _____ _____ _____ _____ 214

221 223 225 _____ _____ _____ _____ _____ _____ 239

230 235 240 _____ _____ _____ _____ _____ _____ 275

203 213 223 _____ _____ _____ _____ _____ _____ 293

275 274 273 _____ _____ _____ _____ _____ _____ 266

258 256 254 _____ _____ _____ _____ _____ _____ 240

265 260 255 _____ _____ _____ _____ _____ _____ 220

297 287 277 _____ _____ _____ _____ _____ _____ 207

  • See how Bonny and Tommy have solved their problem.
  • Bonny has 25 sweets and Tommy has 17. How many sweets do they have altogether?
  • See how Bonny and Tommy have solved their problem.
  • Bonny has 25 sweets and Tommy has 17. How many sweets do they have altogether?
  • Here is a calculation that could cause problems.
  • See what Bonny and Tommy have done:

Mother bakes 52 cookies and they eat 16 of them. How many cookies are left?

There are not enough units to take away the 6. Regroup a ten.


Learning Outcome 1: The 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 Standard 1.1: We know this when the learner counts forwards and backwards in:

1.1.1 the intervals specified in grade 2 with increased number ranges;

Assessment Standard 1.3: We know this when the learner knows, reads and writes number symbols and names from 1 to at least 1 000;

Assessment Standard 1.4: We know this when the learner orders, describes and compares numbers;

Assessment Standard 1.5: We know this when the learner recognises the place value of digits in whole numbers to at least 3-digit numbers;

Assessment Standard 1.8: We know this when the learner can perform calculations, using appropriate symbols, to solve problems;

Assessment Standard 1.10: We know this when the learner uses the following techniques:

1.10.1 building up and breaking down numbers;

1.10.2 doubling and halving;

1.10.3 number-lines;

1.10.4 rounding off in tens.

Learning Outcome 4: The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.

Assessment Standard 4.2: We know this when the learner solves problems involving calculations with and conversions;

Assessment Standard 4.3: We know this when the learner identifies important dates on calendars;

Learning Outcome 5: The learner will be able to collect, summarise, display and critically analyse data in order to draw conclusions and make predictions, and to interpret and determine chance variation.

Assessment Standard 5.1: We know this when the learner collects data (alone and/or as a member of a group or team) in the classroom and school environment to answer questions posed by the teacher and class (e.g. ‘how many learners walk to school?’).

Questions & Answers

do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
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
characteristics of micro business
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 ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
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.
is Bucky paper clear?
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.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
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
what is system testing
what is the application of nanotechnology?
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
anybody can imagine what will be happen after 100 years from now in nano tech world
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
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Mathematics grade 3. OpenStax CNX. Oct 14, 2009 Download for free at http://cnx.org/content/col11128/1.1
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