Worked example · Humanities · Year 2

Buying and selling at Machynlleth market

LNF: Numeracy → Number system → Financial literacy

What this is

A finished Year 2 activity page, as a secure pupil might complete it, with notes on what to look for. It is also the answer key. Siân, her stall and all her prices are invented: apple 10p, Welsh cake 20p, leek 30p, pot of honey 50p, half a dozen eggs £1. The pupil’s marks are shown in blue.

Task 1: ring round the buyer (the person in purple with the purse), box round the seller (Siân behind the stall); Siân sells food to earn money. Task 2: honey 50p, way 1: 50p; way 2: 20p + 20p + 10p (five 10p coins is also right); leek 30p: 20p + 10p (three 10p coins is also right). Task 3: 10p + 20p = 30p; 30p + 50p = 80p; 20p + £1 = £1.20. Task 4: apple 10p, pay 50p, change 40p (4 hops); leek 30p, pay 50p, change 20p (2 hops); Welsh cake 20p, pay £1, change 80p (8 hops). Task 5: A £1, can buy; B 80p, can buy; C £1.10, cannot buy; D £1.20, cannot buy. Ring A and B only. Task 6: receipts will vary; this pupil bought a leek and an apple (40p, paid 50p, change 10p) and an apple (10p, paid £1, change 90p).

apple
10p
Welsh cake
20p
leek
30p
honey
50p
6 eggs
£1

Siân’s prices are made up.

Task 1: Ring the buyer. Draw a box round the seller.

Siân sells food to earn money

Look for: the ring round the person with the purse (the buyer gives money) and the box round Siân behind the stall (the seller has things to sell). “Money” spelt correctly is a bonus; the idea is what counts. In the talk at Step 2, listen for reasons such as “she needs money to buy flour to make more Welsh cakes” or “to pay for her stall”. This is the evidence that pupils know what money is for.

Task 2: Pay the exact price. Draw the coins.

honey 50p
way 1
50p
honey 50p
way 2
20p20p10p
leek 30p
20p10p

Look for: coins that add up to exactly the price, with the value written in every circle, and 2 different ways for the honey. Other correct answers: five 10p coins for the honey; three 10p coins for the leek; 20p + 5p + 5p for the leek. Ask the pupil to count up out loud (“20p, 40p, 50p”). A pupil who draws 3 coins and says “3p” is counting coins, not their value. This is the evidence for using different combinations of coins.

Task 3: Add the 2 prices. Write the total.

10p + 20p = 30p
30p + 50p = 80p
20p + £1 = £1.20

Look for: the unit written every time (30p, not 30). The last sum is the hardest: £1.20 is correct, and 120p is also correct. “£120”, “£1.2” or “1.20p” show the pupil is not yet sure how to write pounds and pence together. Pupils who start with the bigger price and count on in 10s get these quickly.

Task 4: Count on to find the change.

a 10p. I pay Change: 40p

b 30p. I pay Change: 20p

c 20p. I pay Change: 80p

Look for: each set of hops starting on the price and stopping on the coin paid, with the number of hops matching the change (4 hops is 40p). The most common slip is counting the starting number as a hop, which gives 50p for a, 30p for b and 90p for c. Part c is the stretch: knowing that £1 is the same as 100p lets the pupil land on £1 at the end of the line. This is the main evidence for working out change.

Task 5: You have £1. Write each total. Ring the baskets you can buy.

A

total £1

B

total 80p

C

total £1.10

D

total £1.20

Look for: all 4 totals correct and only A and B ringed. Basket A costs exactly £1, which is just enough, so it can be bought; some pupils think they need more than the price. Basket D has 2 pots of honey: a pupil who writes 70p has missed the second pot. C (£1.10) and D (£1.20) cost more than £1, so they are not ringed. This is the evidence for deciding what you can afford.

Task 6: Role play. Fill in a receipt each time you buy.

Siân’s stall: receipt 1

I bought leek and apple

Price 40p

I paid 50p

Change 10p

Siân’s stall: receipt 2

I bought apple

Price 10p

I paid £1

Change 90p

Look for: the 4 lines fitting together on each receipt: price + change = the money paid (40p + 10p = 50p; 10p + 90p = £1). Receipts will vary. A buyer who pays the exact price is right too, and the change is 0p. While pupils play, listen for buy, sell, price, total and change, and for sellers counting on out loud to find the change. Some pupils will say diolch (thank you) or call the Welsh cakes picau ar y maen; praise this. This is the evidence for exchanging money for items in role play.

Common mix-ups to talk about