Remember: Coins out can never be more than coins in. If a promise is far bigger than what goes in, or there is a hurry, a secret or a friends bonus, stop and ask a grown-up.
Read and answer
Read the story first, then answer.
The Golden Goose ClubOne sunny day, a man named Mr. Glib rolled a cart into Pennyfield square. His sign said Golden Goose Club. "Four coins today, forty back in a week!" he called. Forty is ten times more than four, in just seven days! A line of children formed. Maya did not join the line. She asked, "Where do the forty coins come from?" "Magic!" said Mr. Glib. "The goose lays them, so never mind how." Maya thought it through. Say ten children join, each putting in four coins. That is forty coins in the jar, and every coin the club has. Mr. Glib pays the first child forty coins, so now the jar is empty. But nine children are still waiting, and each was promised forty coins too. To pay all ten, the club needs four hundred coins, but it has only forty, so three hundred and sixty coins are missing. A club like this can only pay early members with coins from newer members. Sam kept his four coins, and the line melted away.
1
Ten children each put in 4 coins. The jar holds coins.
2
Mr. Glib pays the first child 40 coins. How many coins are left in the jar?
NoneFour coinsThirty-six coins
3
To pay all 10 children 40 coins each, the club needs coins.
4
The club needs 400 coins but has only 40. It is missing coins.
5
Mr. Glib's goose really lays the forty coins.
TrueFalse
6
Number what happened at the club, first to last.
Everyone puts coins in the jar
The first child is paid forty coins
The jar is empty, so the nine waiting get nothing
A line of children forms
Think and fix
7
Circle every warning sign of a get-rich-quick club.
A huge promise for a tiny coinA price on a tagHurry, only todayKeep it secret from your grown-upsA receipt for what you bought
8
Join each warning sign to an example.
1a huge promise
2a hurry
3a secret
4a friends bonus
Ado not tell your grown-ups
Bonly today
Ca bonus for bringing in more friends
Dfour coins in, forty back in a week
9
How can a club like this pay anyone?
The goose lays the coinsWith coins from newer membersFrom a vault that nobody has seen
10
Fix the mistake. Sam says: the club has 40 coins, so it can pay all 10 children 40 coins each. Is Sam right?
YesNo
11
Stretch: each child puts in 4 coins. It takes children's coins to pay just one child 40 coins.
12
Which rule did Maya use when she asked where the coins come from?
A bigger promise is a safer oneA hurry means a better dealCoins out can never be more than coins in
13
Write the question Maya asked, and one more question you would ask about a promise that sounds too good.
14
Draw the jar after the first child is paid, and the nine children still waiting.
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Answer key · Set A
The Golden Goose Club
140 10 children times 4 coins is 40 coins, and that is every coin the club has.
2None The jar held 40 coins and all 40 went to the first child.
3400 10 children times 40 coins is 400 coins.
4360 400 − 40 = 360 coins are missing.
5False Geese do not make coins. Only forty coins went into the jar.
62, 3, 4, 1 The children put coins in first. The first one is paid from them, and then the jar is empty.
7A huge promise for a tiny coin, Hurry, only today, Keep it secret from your grown-ups A huge promise, a hurry and a secret are warning signs. A price tag and a receipt are ordinary.
81-D, 2-B, 3-A, 4-C Any one of the four signs means stop and ask a grown-up.
9With coins from newer members It pays early members with coins from newer members, and the last members lose their coins when the new ones run out.
10No Paying 10 children 40 coins each takes 400 coins, and the club has only 40.
1110 40 is ten groups of 4, so ten children's coins pay for one.
12Coins out can never be more than coins in If a promise is far bigger than what goes in, ask where the coins come from.
13Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.