Prices and change at the till

Tests: 1 of 11 right · Exam: 1 of 4 right · Kind: plain · Understood: 4 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 11 of the money course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · wrong ✗

Mate at the till: "it's £2.60 and I gave a fiver, he's given me £3.40, result!" What's the honest move?

1. Leave the shop as fast as you can — ← Mova's choice · no support
2. Ask him for even more change back — no support
3. Tell the lad it's £1 too much — ✓ the right answer · no support
4. Keep it, it's his fault not yours — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 2 · wrong ✗

Market man: "three apples at 30p, that's a pound, love." Sofia says "isn't it 90p?" He laughs: "fair cop." ("Fair cop" means you caught me fairly.) Who was right?

1. The man: it's £1 — ← Mova's choice · no support
2. Neither: it's 60p — no support
3. Both: 90p rounds to £1 so it's the same — no support
4. Sofia: 3 × 30p = 90p — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 3 · right ✓

Bloke in the newsagent's: "25p for a Freddo?? Daylight robbery!" ("Daylight robbery" means a price that feels like stealing.) Why did the price go up?

1. The shop is stealing from him — score 3
2. Prices slowly rise over the years; that's inflation — ← Mova's choice · ✓ the right answer · score 5
3. Freddos got bigger — no support
4. The bloke is just bad at maths — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 5, against 3 for the next best. Its support: lesson 11, line 14: «Prices go up slowly over the years; this is called inflation, which is why grown-ups remember cheaper prices.», reached through the option's own match among the sentences about the question's things. What matched: the same action «go up» (+2); the same doer «prices» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

Archie goes "75p, sweets 20p, so I get 4, easy." What's wrong?

1. He can actually buy 5 — ← Mova's choice · no support
2. 4 sweets cost 80p, which is 5p more than he has — ✓ the right answer · no support
3. Nothing, 4 sweets is right — no support
4. He can only buy 2 — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

Jake hands over a tenner for a £3.50 toy and the man gives him a fiver and a £1 coin. What's missing?

1. £1, the change should be £7 — ← Mova's choice · no support
2. £1.50, the change should be £7.50 — no support
3. 50p, the change should be £6.50 — ✓ the right answer · no support
4. Nothing, £6 is right — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 6 · wrong ✗

Callum's mate: "in the shop over the road it's £3, bro." Callum's buying 2. How much does he save over the road?

1. £1 — ← Mova's choice · no support
2. £6 — no support
3. £8 — no support
4. £2 — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 7 · wrong ✗

What would happen if nobody ever checked their change?

1. Mistakes and tricks would go unnoticed and people would lose money — ✓ the right answer · no support
2. Shops would always give too much change — ← Mova's choice · score 0
3. Nothing, tills are never wrong — no support
4. Change would become free — no support

Why: It took the question to ask what happens next. It chose option 2 with score 0, the only option with support. Its support: lesson 11, line 4: «People make mistakes, so be honest both ways: if the new lad gives you £1 too much change, say so, and if the till charges more than the shelf says, point it o…», reached through the option's own match among the sentences about the question's things. What matched: the same action «give» (+2); the same thing acted on «£ much change» (+2). Against it: a different doer (counts against) (-1); one says «not», the other does not (counts against) (-3). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

Kieran: "2 cans of pop at 65p and crisps at 70p — no wait, 75p." He has £2. Can he buy all three?

1. Yes, with 5p change — ← Mova's choice · no support
2. Yes, it's exactly £2 — no support
3. No, it's £2.05, 5p short — ✓ the right answer · no support
4. No, it's £2.20 — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 9 · wrong ✗

A Kiwi kid says "sweet as, the dairy's got Jaffas for 40c, I'll get 3." ("Sweet as" means great; a "dairy" is a corner shop in NZ.) What do 3 cost?

1. $1.40 — ← Mova's choice · no support
2. $1.00 — no support
3. $0.12 — no support
4. $1.20 — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 10 · wrong ✗

The till says £1.10 for juice; the shelf says 80p. Mum says "Excuse me, the shelf says 80p." What usually happens?

1. Nothing, because shelf prices don't count — ← Mova's choice · no support
2. She pays £1.90 for both of the prices — no support
3. She is told to leave the shop at once — no support
4. The shop checks and fixes the price — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 11 · wrong ✗

Ayla's got a £1 coin and a 10p. Lolly's 60p. She gives the lot. What's her change?

1. One 50p coin — ✓ the right answer · score 10
2. 40p — ← Mova's choice · score 16
3. 60p — score 16
4. Four 10p coins — score 10

Why: It took the question to ask what it is done to. It chose option 2 with score 16, tied with another option at 16 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 11, line 2: «The fastest way to check change is to count up from the price: Jake pays £10 for a £3.50 toy, so £3.50 + 50p = £4, + £1 = £5, + £5 = £10, and his change is 50p…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same doer «change» (+4); the same thing acted on «50 p» (+4); the same light verb (be, have, do, get, go) (+2). The right option, 1, scored 10. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

A purchaser tenders a five-pound note in respect of a periodical priced at two pounds sixty pence. Ascertain the change due.

1. Two pounds forty pence — ← Mova's choice · ✓ the right answer · no support
2. One pound forty pence — no support
3. Two pounds sixty pence — no support
4. Three pounds forty pence — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

It is given that a beverage is priced at one pound twenty pence and a packet of crisps at eighty-five pence. Determine whether a sum of two pounds suffices for the purchase of both.

1. It does, precisely and without remainder — no support
2. It does not, being insufficient by fifteen pence — no support
3. It does not, being insufficient by five pence — ✓ the right answer · no support
4. It does, leaving five pence as change — ← Mova's choice · score 6

Why: It took the question to ask which statement is true. It chose option 4 with score 6, the only option with support. Its support: lesson 11, line 2: «The fastest way to check change is to count up from the price: Jake pays £10 for a £3.50 toy, so £3.50 + 50p = £4, + £1 = £5, + £5 = £10, and his change is 50p…», reached through the remembered sentence the question matched. What matched: the same thing acted on «50 p» (+4); the same circumstance (+4). Against it: a different doer (counts against) (-2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

A sum of seventy-five pence is held and confectionery is priced at twenty pence per item. State the greatest number of items which may be purchased.

1. Four — ← Mova's choice · no support
2. Five — no support
3. Three — ✓ the right answer · no support
4. Two — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Identify the course of action most consistent with honesty where change in excess of the correct amount is received.

1. Departing the premises with expedition — ← Mova's choice · no support
2. Requesting a further sum from the cashier — no support
3. Retaining the excess without any remark — no support
4. Informing the cashier of the excess — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/money/11-prices-and-change-at-the-till/