Year: 2009

Number rhymes: Five little ducks

Number rhymes from mathsblog.co.uk together with urbrainy.com

The second in our series of number rhymes for young children to help them recognise numbers and count up to 5 and from 5 back down to zero. There is plenty that can be done with number rhymes such as this, children like to learn them off by heart, starting just by saying “Quack, quack, quack” and quickly remembering more of the verses. They can be incorporated into games: bath time with rubber ducks.

Five little ducks went out one day,
Into the woods and far away.
Mother duck said, “Quack, quack, quack,”
But only four little ducks came back.

etc. Click on link below to view and print the number rhyme and further activities.

Five little ducks

Coming soon: Multiplication, square numbers and symmetry

rocket4Next week we look at the concept that multiplication can be done in any order, suitable for Year 3. Put at its simplest, 4 lots of 5 is the same as 5 lots of 4 or 4 x 5 is the same as 5 x 4. Children should have had a lot of experience with arrays which are a great way to show this.

Also coming soon is the second in our square numbers series for Year 5 which looks at what numbers will make a square using an array or colouring a grid. In many ways this is a similar theme to the multiplication above.

Thirdly, we have our first reflective symmetry worksheet for year 2.

Free maths worksheet: Standard written method for addition of two 3-digit numbers

Free maths worksheet: Standard written method for addition of two 3-digit numbers.

Addition of two 3-digit numbers is usually done on paper, using the following standard method.

The method is to add the units first, put the units in the answer, and ‘carry’ the ten into the tens column. Then add the tens and continue in the same way into the hundreds. Whilst all the questions on the free maths worksheet have carrying to both tens and hundreds, this will not always be necessary if the sum of the digits is less than 10.

To see each step in more detail, together with a page of questions and answers, view the pdf below:
Standard written addition of two 3-digit numbers

Free Y6 maths worksheet: Probability dice

Free maths worksheet on probability from mathsblog.co.uk

Probability often causes problems, even with adults. Take a nomal 6 sided die. The probability of rolling an even number is 50%. The probability of throwing an odd number is 50%. So, if rolling a die 50 times it would be sensible that you would estimate that you would roll 25 even numbers and 25 odd numbers.

When actually rolling the die 50 times it is more than likely that you do not throw 25 of each number.

This can make an interesting discussion point: if you rolled a die a million times would you get exactly 500 000 odd and 500 000 even numbers?

However, is it sensible to predict anything other than an equal number of each?

Free Y6 maths worksheet: probability dice