# Diamond Maths

**Fancy a challenge? Have a go at a ‘Decimal Diamond’. There are levels of difficulty from any age to any year! TEST YOUR BRAINS WITH DECIMAL DIAMONDS!!!**

I am writing to respond to your decimal diamond challenge. My challenge is to work with one decimal place; this is aimed at a year four pupil. The mathematical knowledge needed is to be able to add and subtract numbers with one decimal place. These are the starting numbers I would provide. I chose these because there are 1 or 2 answers in each line.

Here is the answer to my decimal diamond. I have checked all my answers. To make it harder you could pick a number with 2 decimal places for the home number. To make it easier you could do a whole integer with no decimals.

Yours sincerely,

Maddison Peck Year 6

Gusford Primary School

I am writing to respond to your decimal diamond challenge! This challenge includes one integer which is the number that the other numbers have to add up to. However, the other number that are there must be decimals.

This is my challenge:

To complete this task you should be able to add and subtract decimals. The decimals have only a tenth and an integer so year 5 could do this. This is my solution:

Yours sincerely,

Eloise Evans Year 6

Gusford Primary School

I am writing in response to give you a decimal diamond example. Here is my decimal diamond: My challenge is to use numbers with two decimal places and a big integer. You need certain mathematical knowledge such as adding, subtracting and mental maths. To make it harder you can add another decimal place. To make it easier you can decrease the decimal places.

Here is my solution:

Yours sincerely,

Dylan Bailey Year 6

Gusford Primary School

I am writing to you because I have seen the request for some decimal diamond examples for your website. My challenge is for each side to equal 100.25 with only two decimal places used. I recommend that year 5/6 would try this type of calculations. It is a bit difficult but not to easy either.

The mathematical knowledge required for these types of decimal diamonds is the ability to add and subtract decimals. To make it easier you could use only integers. To make it harder you could use negatives or fractions.

The solution:

Yours sincerely,

Imogen Hare Year 6

Gusford Primary School

*Do you want to test your mind?*

* *

I am writing to you in response to your request for some more examples of decimal diamonds. My challenge is to total a negative number using decimals. The mathematical knowledge needed is to be able to add and subtract decimals and positive and negative numbers. To make it harder you could make it a three digit number. To make it easier use integers.

The solution to my challenge:

Yours sincerely,

Jake Hosking Year 6

Gusford Primary School