Addition & Subtraction


Posted by Miss Crowther | Posted in Uncategorized | Posted on March 17, 2015

In numeracy, we are learning more about addition and subtraction. We have been working with whole numbers, common fractions and decimal fractions.

Last week we focused on solving problems using equivalent number sentences. Here are some examples of equivalent number sentences:

14 + 17 = 15 + 16


385 – 60 = 390 – 65


(3 x 3) + 11 = 4 x 5

The number one thing to remember when working with equivalent number sentences is that the answer on each side of the = has to be the same.
Different strategies can be used to work out any missing numbers.

181 + 7 = 185 + ?

For the example above, we discovered that if one of the numbers in a problem gets larger or smaller the other number does the opposite. For example, 181 got larger by 4 to become 185. So, 7 has to get smaller by 4. Therefore, the ? = 3. You can check it by doing 181 + 7 = 1881 and 185 + 3 = 188 too. It works because each side has the same total, just with different numbers.

73 – 9 = 75 – ?

When you solve subtraction problems, you have to make sure the ‘gap’ or difference between the numbers stays the same.  Both numbers have to increase by the same amount. So, ? = 11.

Click HERE to do some of the activities we did online to practise working with equivalent number sentences.

This week we are adding and subtracting fractions. Before we started, we shared all the different ways we had already used fractions in the last 24 hours. It was surprising to find out how many ways we had used a fraction of something – from 1/2 a cup of milk with our porridge to eating one sixth of a birthday cake.

We know that the denominators (the bottom part of the fraction) have to be the same before you can add or subtract. This is because the denominator tells you if the fraction is a half, third, quarter and so on.


2 + 5 = 7

8    8    8


 Click HERE to practise adding and subtracting fractions in an online game.

Sometimes you have to change the denominator if they are not the same to start with. We have looked at how to find the lowest common denominator.

Can you use an equivalent number sentence to solve the following problem?

When this number is added to 13 the answer is the same as 10 + 9. What is the missing number?


When do you add and subtract fractions in Real Life?


Have you got an addition or subtraction problem for us to solve? Please share it!



How To Make An Ice Cream Sandwich


Posted by Mrs Placek | Posted in Literacy, Uncategorized | Posted on July 13, 2014

Procedures are factual texts that provide instructions on how to make or do something.
The following video from YouTube is a type of procedural text because it shows us how to make ice cream sandwiches.

The reading strategy we are working on is ‘Ask Questions Throughout Reading’. We ask questions before, during and after reading or viewing a text to improve our understanding of the text. If you are asking questions about the text, you are actively engaged in reading.

Before you view the YouTube video, record two questions you have.
While watching the video, record two questions.
After watching, record two final questions you still have.

Did your questions get answered? How did asking questions help you to improve you understanding of the text?



Posted by Miss Crowther | Posted in Uncategorized | Posted on January 6, 2014

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In 2014 there will be one grade of 5/6 students with two full time teachers and this is our blog!  Here you can keep up to date with our learning and projects.  We hope that you will visit often.  Please use the subscribe feature (link on the top right of the blog) so that you receive an email when we publish a new post.  That way you will always know what is going on in Grade 5/6!

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