2.1 Coins  (Page 4/4)

• Add up all the 5c coins:

• Draw the 5c coins that equal each amount:

• Count forwards in multiples of 5 and back again:

5 ____ ____ ____ ____ ____ ____ ____ ____ 50

50 ____ ____ ____ ____ ____ ____ ____ ____ 5

• Find the pattern and complete the table:

• See what happens if we switch the table around:

• Think!

Bonny and Tommy say:

It is easy to work with 1c, 2c, 5c and 10c coins.

• What is the amount in the purse?

• Write down the value of the coins that are in their purses: (1c, 2c, 5c en 10c)

• Now decide which coins, and how many, are in their purses, and then draw them.

16c

47c

4c

63c

39c

28c

• Bonny and Tommy like tables.
• This table of equal values helps them to calculate how many and which coins they have to get when they fetch change from the bank.

• Complete the tables:

• Bonny has 10 10c coins in her purse. She swops with Tommy who gives her 1 coin for them. Which coin did he give her?

She got a _____ coin.

• Tommy has a R2 coin and exchanges it with his mother for 50c coins. How many coins did he get?

He got a _____ 50c coins.

• Bonny goes to the bank with 200 1c coins. She comes back with 2 coins. What did the bank give her?

She got 2 ____ coins.

Who knows?

R1 = _____c R2 = _____c R3 = _____c

R4 = _____c R5 = _____c R10 = _____c

• Use any method to do the calculations, but show how you do them. Leave out the R and c signs when you do the calculations, but remember to write them down when you give the answer.

50c + 50c + 50c + 50c + 50c + 50c + 50c = __________

• Solve the problems in your own way.
• Write down the number sentences.

1. Bonny bought 3 chocolates. Each one cost 31c. How much did she pay?

She paid _________________________________.

How much change did she get if she paid with a R1-coin?

She got __________________________________.

2. Tommy bought 5 bags of marbles. Each bag cost R2,10. How much did he pay for all the marbles?

He paid __________________________________.

He gave R12. How much change did he get?

He got__________________________________.

3. Bonny would very much like to buy herself a pen. The pen costs R13 and she has R10, 80 in her purse. How much does she still need?

She needs __________________________________.

4. Every day Tommy buys himself an ice cream that costs R2. He has R14 left in his purse. For how many days will he still be able to buy an ice cream?

He can _________________________________.

5. Mommy gave Bonny and Tommy R65 to share equally between the two of them. How much did each one get?

Each one got ________________________________.

6. How many c in:

R1,67 = ______c R2,99 = ______c R3,06 = ______c

R1,20 + R1,15 = ______c R0,55 + R4,10 = ______c

7. Make each amount R1, 50 more:

R20,20_______________ R29, 49__________________

• Calculate the costs of what we buy:

• Calculate the change:

• Mommy says that Bonny and Tommy may each invite 4 friends to their party.

1. There will be _________ children. (Make sure that your answer is correct.)

2. Calculate how many of everything they need and how much it costs.

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;

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

Learning Outcome 2: The learner will be able to recognise, describe and represent patterns and relationships, as well as to solve problems using algebraic language and skills.

Assesseringstandaard 2.2: We know this when the learner copies and extends simple number sequences to at least 1 000.

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