Monday 18th May 2020
Lesson 15
L.C: To be able to recognise and write decimal equivalents to 1⁄4, 1⁄2, 3⁄4.
This week we are continuing our learning about decimals. In today's lesson we are going to use our knowledge of fractions to write decimal equivalents.
What is a decimal?
Watch the video about decimals.
In focus task
*Remember these are parts of a whole
Let's learn
If you look at the square you can see that it has been divided into 10 equal parts.
Half of shape is dark green.
This means that 5 out of 10 parts are dark green this is the same as half.
1 = 5 tenths = 0.5 as a decimal
2
This time when we are finding a quarter, we need to divide the square into 100 equal parts.
What facts can we use to help us work out a quarter?
We know that a quarter is a whole divided into 4 equal amounts/ parts.
We also know that quarter of 100 is 25
You can see the 1/4 of the square is dark green.
To find the decimal we divide 100 by 25 this equals 0.25
Look at this place value chart:
This shows 25 Decimal Point
Whole Numbers .
Hundreds  Tens  Ones  Tenths  Hundreths 
2  5 

Watch what happens to the number when it is divided by 100.
What do you notice?
Decimal Point
Whole Numbers . less than a whole number
Hundreds  Tens  Ones  Tenths  Hundreths 
0  2 
5 
25 ÷ 100 = 0.25
Guided Practice
*Remember you are dividing by 2 when finding half.
I have done the first part for you.
1 = 5 = ? tenths
2 10
Use the information from the let's learn to help you work these out:
You could use the place value chart to help you work these out:
I have done (a) for you
Look carefully at how I have worked out the answer:
(a) 1 3 = ? decimals.
4
First I am looking at the fraction.
I know that 1 = 0.25 as a decimal
4
but I need 3 = 0.25 x 3 = 0.75
4
Now, I also need to remember the whole number too.
Look at where I put the numbers in my place value chart.
Decimal Point
Whole Numbers . less than a whole number
Hundreds  Tens  Ones  Tenths  Hundreths 
1  7 
5 
The answer is 1.75m (*don't forget the unit of measure)
Complete Worksheet 15 on pages 29  30 in your Maths No Problem Workbook
When you have finished, check your work, then log on to
Mangahigh or TT Rockstars and challenge yourself.