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  • Mary has 16 sweets and she wants to give Peter 9. How many will she have left?

Tommy says we must do it without the dots now.

  • Do the one that you understand best .

14 - 9 = 14 - 4 - 5 = ___ of 14 - 9 = ( 10 - 9) + 4 = ___

13 - 8 = 13 - 3 - 5 = ___ of 13 - 8 = ( 10 - 8) + 3 = ___

12 - 6 = 12 - 2 - 4 = ___ of 12 - 6 = ( 10 - 6) + 2 = ___

5 - 7 = 15 - 5 - 2 = ___ of 15 - 7 = ( 10 - 7) + 5 = ___

18 - 9 = 18 - 8 - 1 = ___ of 18 - 9 = ( 10 - 9) + 8 = ___

11 - 5 = 11 - 1 - 4 = ___ of 11 - 5 = ( 10 - 5) + 1 = ___

  • Complete:
  • Think!
  • Bonny and Tommy feel like doing their sums vertically .
  • The number in the top circle is found every time by adding together the numbers of the 2 circles below it, to which it is connected. Complete the number wall now.

101 * * * * * * * * * * 110

111 * * * * * * * * * * 120

121 * * * * * * * * * * 130

131 * * * * * * * * * * 140

141 * * * * * * * * * * 150

151 * * * * * * * * * * 160

161 * * * * * * * * * * 170

171 * * * * * * * * * * 180

181 * * * * * * * * * * 190

191 * * * * * * * * * * 200

  • Do the calculations below. Mark the answers in the block above. Join the numbers with a straight line, in the sequence in which you do the calculations.

1. 150 + 1 = _____

2. 160 - 1 = _____

3. 111 + 4 = _____

4. 155 - 4 = _____

5. 180 + 10 + 1 = _____

6. 190 + 5 + 4 = _____

7. 160 - 5 + 4 = _____

What do you see? ______________ How many shapes do you see?_____

Name them. _____________________________________________

Draw a line that will halve the shapes. Colour in half of every shape.

How many shapes do you see now?

Name them._____________________________________________

How many sides are there to a:

a triangle ______ , a square ______ and a rectangle ______ ?

How many angles are there to a:

a triangle ______ , a square ______ and a rectangle ______ ?

Below is an illustration of the box in which Bonny and Tommy’s pencils were packed. They wanted to know what shapes were used in making this box, so they opened it up like this.

  • Which shapes do you recognise, and how many of them are there?

____________________________________________________________________

  • Now each of you must bring a box (not too big) to school. Open it up and draw it on the other side of this worksheet. You can paste the box there later.
  • Write down which shapes and how many were used.

____________________________________________________________________

  • Use your ruler and measure the sides of each shape. Write it on our drawing. If you don’t know how to measure with a ruler, you can ask your educator or a friend to help you.
  • What do you know about the sides of a square and a rectangle ?

The sides of a square ___________________________________________________

The sides of a rectangle _____________________________________________

  • What do you know about the angles of a square and a rectangle ?

____________________________________________________________________

  • Design and make your own container in which you can put some sweets. If you don’t have cardboard, use the inside of some other big, empty container.

Today Bonny and Tommy got only half an apple each. Their mother had only 1 apple, but she divided it very carefully so that both parts were exactly the same size . She halved it.

  • We say: Bonny got one half, and Tommy got the other half.
  • Mother gave Bonny and Tommy 15 cookies to share between them. Draw the cookies in their lunch boxes.
  • How many cookies did each one get?

Each one got______________________________________.

Solve the problems in the way you prefer. You may draw them.

  • Tommy buys 13 bananas and gives half to Bonny . How many bananas did each one get?

Each one got______________________________________.

  • Bonny has a ribbon that is 29cm long. She wants to cut it in half to make 2 ribbons of the same length. How long will each ribbon be?

Each ribbon will be____________________________.

  • Tommy has to drink 17 glasses of water in 2 days. How many glasses of water must he drink on 1 day if he drinks the same amount of water each day?

He must drink _____________________________________ each day.

  • Mother bought 25 litres of fruit juice for a party, but the children drank only half of it. How many litres were left over?

There were ______________________________________________.

  • Who wants to try this ? (You may draw if you like.)

3 ½ + 3½ = ____

5½ + 5½ = ____

10½ + ½ = ____

12 +2½ = ____

Assessment

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 1.6: We know this when the learner solves money problems involving totals and change in rands and cents, including converting between rands and cents;

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

Assessment Standard 1.9: We know this when the learner performs mental calculations;

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 3: The learner will be able to describe and represent characteristics and relationships between two-dimensional shapes and three-dimensional objects in a variety of orientations and positions.

Assessment Standard 3.1: We know this when the learner recognises, identifies and names two-dimensional shapes and three-dimensional objects in the environment and in pictures;

Assessment Standard 3.3: We know this when the learner observes and creates given and described two-dimensional shapes and three-dimensional objects using concrete materials (e.g. building blocks, construction sets, cut-out two-dimensional shapes, clay, drinking straws).

Questions & Answers

what is mutation
Janga Reply
what is a cell
Sifune Reply
how is urine form
Sifune
what is antagonism?
mahase Reply
classification of plants, gymnosperm features.
Linsy Reply
what is the features of gymnosperm
Linsy
how many types of solid did we have
Samuel Reply
what is an ionic bond
Samuel
What is Atoms
Daprince Reply
what is fallopian tube
Merolyn
what is bladder
Merolyn
what's bulbourethral gland
Eduek Reply
urine is formed in the nephron of the renal medulla in the kidney. It starts from filtration, then selective reabsorption and finally secretion
onuoha Reply
State the evolution relation and relevance between endoplasmic reticulum and cytoskeleton as it relates to cell.
Jeremiah
what is heart
Konadu Reply
how is urine formed in human
Konadu
how is urine formed in human
Rahma
what is the diference between a cavity and a canal
Pelagie Reply
what is the causative agent of malaria
Diamond
malaria is caused by an insect called mosquito.
Naomi
Malaria is cause by female anopheles mosquito
Isaac
Malaria is caused by plasmodium Female anopheles mosquitoe is d carrier
Olalekan
a canal is more needed in a root but a cavity is a bad effect
Commander
what are pathogens
Don Reply
In biology, a pathogen (Greek: πάθος pathos "suffering", "passion" and -γενής -genēs "producer of") in the oldest and broadest sense, is anything that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.[1][2
Zainab
A virus
Commander
Definition of respiration
Muhsin Reply
respiration is the process in which we breath in oxygen and breath out carbon dioxide
Achor
how are lungs work
Commander
where does digestion begins
Achiri Reply
in the mouth
EZEKIEL
what are the functions of follicle stimulating harmones?
Rashima Reply
stimulates the follicle to release the mature ovum into the oviduct
Davonte
what are the functions of Endocrine and pituitary gland
Chinaza
endocrine secrete hormone and regulate body process
Achor
while pituitary gland is an example of endocrine system and it's found in the Brain
Achor
what's biology?
Egbodo Reply
Biology is the study of living organisms, divided into many specialized field that cover their morphology, physiology,anatomy, behaviour,origin and distribution.
Lisah
biology is the study of life.
Alfreda
Biology is the study of how living organisms live and survive in a specific environment
Sifune
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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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