smc-3174-10-Coins and change

Number, NAP-L4-NC04 SA

Albert buys six donuts at a bakery.

He pays with a $5 note and gets 80 cents change.

How much does each donut cost?

cents

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`70`

Show Worked Solution

`text(C)text(ost of donuts)= 5.00 – 0.80=$4.20`

`:.\ text(C)text(ost of 1 donut)`	`=420/6`
	`=70\ text(cents)`

Number, NAP-L4-CA03

Candice buys an apple for 75 cents and a banana for 70 cents.

She pays with a $2 coin.

How much change should Candice get?

`55\ text(cents)`	`65\ text(cents)`	`$1.45`	`$3.45`

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`55\ text(cents)`

Show Worked Solution

`75 text(c) + 70 text(c)`	`= $1.45`
`$2 – $1.45`	`= 0.55`
	`= 55\ text(cents)`

Number, NAP-K4-NC05 SA

Camilla received a total of $250 in cash for her birthday.

She went shopping and bought some shoes that cost $79.95 and a dress that cost $124.50.

How much money does Camilla have left?

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`$45.55`

Show Worked Solution

`text(Money left)`	`= 250 – (79.95 + 124.50)`
	`= 250 – (204.45)`
	`= $45.55`

Number, NAP-J4-CA30 SA

Willy buys 16 lollipops for $5.60.

Wonka buys 30 lollipops at the same cost per lollipop.

How much more does Wonka pay than Willy?

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`$4.90`

Show Worked Solution

`text(C)text(ost of 1 lollipop) = 5.60/16 = $0.35`

`text(C)text(ost of 30 lollipops) = 30 xx 0.35 = $10.50`

`:.\ text(Extra that Wonka pays)`

`= 10.50 – 5.60`

`= $4.90`

Number, NAP-E4-NC04

Max bought 5 lollipops and 3 chocolate bars from the shop.

The lollipops cost 30 cents each and the chocolate bars cost $1.20 each.

How much did Max pay?

`$1.50`	`$2.70`	`$5.10`	`$5.90`	`$6.90`

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`$5.10`

Show Worked Solution

`text(Total Cost)`	`=(5 xx 0.30) + (3 xx 1.20)`
	`=1.50 + 3.60`
	`=$5.10`

Number, NAP-E4-NC01

Penny has four 20-cent pieces.

Fi has three 20-cent pieces.

Sophie has four 20-cent pieces.

How much money do they have in total?

`$1.10`	`$2.00`	`$2.20`	`$2.60`

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`$2.20`

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`$2.20`

Number, NAP-F4-NC15

Brandon has a money jar that contains 50 cent, 20 cent, 10 cent and 5 cent pieces only.

If he buys a pie worth $2.65, what is the minimum amount of coins he can pay with?

`5`	`7`	`8`	`9`	`11`

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`7`

Show Worked Solution

`text(Minimum number of coins would be:)`

`5 xx 50\ text(c)`

`1 xx 10\ text(c)`

`1 xx 5\ text(c)`

`:.\ text(A minimum of 7 coins is needed.)`

Number, NAP-G4-NC08

Charlie has $20 to buy a can of soda and a chocolate bar from the shop.

How much change should Charlie be given?

`$15.70`	`$16.70`	`$17.10`	`$24.30`

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`$15.70`

Show Worked Solution

`text(Change)`	`=20-(2.80 + 1.50)`
	`=20 – 4.30`
	`=$15.70`

Number, NAP-G4-CA13

Patrick has 5-cent, 20-cent and 50-cent coins in his pocket.

In total he has $1.95.

What is the smallest number of coins he could have?

`5`	`6`	`7`	`8`	`9`

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`6\ text(coins)`

Show Worked Solution

`50\ text{cent coin (3 pieces)}`	`= $1.50`
`20\ text{cent coin (2 pieces)}`	`= $0.40`
`5\ text{cent coin (1 piece)}`	`= $0.05`
`text(Total)`	`= $1.95`

`:. 3 + 2 + 1 = 6\ text(coins)`

Number, NAP-H4-NC02

Andreas has $8 to buy batteries for his toy racing car.

Each battery costs $1.60 and he buys 4 batteries.

Which expression shows how much money he has left?

	`$8 - $1.60`
	`$8 - (4 xx $1.60)`
	`$8 - $1.60 + $1.60 + $1.60 + $1.60`
	`4 xx ($8 - $1.60)`

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`$8 – (4 xx $1.60)`

Show Worked Solution

`$8 – (4 xx $1.60)`