January Challenge - Years 1 & 2

Biscuit Decorations

Andrew decorated 20 biscuits to take to a party.

He lined them up and put icing on every second biscuit.
Then he put a cherry on every third biscuit.
Then he put a chocolate button on every fourth biscuit.
So there was nothing on the first biscuit.

1. How many biscuits had no decoration? 

2. Did any biscuits get all three decorations?

Solutions are to be completed by Friday January 29th.  Please post them into the Maths Challenge Box in the picture book library.  

January Challenge - Years 3 & 4

These sixteen children are standing in four lines of four, one behind the other. They are each holding a card with a number on it.

Each child in blue is holding a number which is four more than the child in the same row wearing red.

The children in yellow shirts each have a number which is double the number of the child in the same row wearing red.

1. Some of the numbers that the children in red, blue or yellow shirts are holding have got rubbed off. What should the numbers be?

2. Can you work out how the numbers that the children in green are holding have been worked out? What are the two missing numbers?

(Hint:  Think about adding two numbers together.)

3. If there was another row of four children standing behind the fourth row, what numbers would they be holding?

Solutions are to be completed by Friday January 29th.  Please post them into the Maths Challenge Box in the picture book library.  

January Challenge - Years 5 & 6

The pages of Jack’s book are numbered from 1.

The page numbers have a total of 555 digits.

How many pages has the book?

How many of the digits are a 5?

Solutions are to be completed by Friday January 29th.  Please post them into the Maths Challenge Box in the picture book library.  

December Solutions - Year 1 & 2

Dasher costs £14.

Dancer costs £14.

Prancer costs £16.

Vixen costs £12.

Comet costs £12.

Cupid costs £12.

Donner costs £14.

Blitzen costs £16.

Rudolph costs £16.

Extra challenge:

a)      The name tags for Prancer, Blitzen and Rudolph are the most expensive.

b)      The name tags for Comet, Cupid and Vixen are the least expensive.

c)      All nine nametags cost a total of £126.

December Solutions - Years 3 & 4

The elf would weigh 69 kg after twelve days.

December Solutions - Year 5 & 6

After testing the different options, I found if you cut 2 squares deep it will become a 6 x 6 base with a 2 square high side.  This makes the largest amount of space: 72 cubes. I worked this out using :

Length x Width x Height
6 x 6 x 2 = 72 cubes