Answer

Hello，children. Have you completed the table given? Now, you can check your answer here.

Event started	Event ended	Duration
July 2008	December 2008	6 months
February 2009	March 2011	2 years and 2 months
26 June 2007	13 September 2010	3 years 2 months and 13 days

Solutions:

July

August

September

October

November

December

1 month + 1 month + 1 month + 1 month + 1 month +1 month

 = 6 months

The duration from July 2008 to December 2008 is 6 months.

February 2009 to January 2010

February 2010 to January 2011

February 2011 to March 2011

1 year + 1 year + 2 months = 2 years and 2 months

The duration from February 2009 to March 2011 is 2 years and 2 months.

26 June 2007 to 30 June 2008	1 July 2008 to 30 June 2009	1 July 2009 to 30 June 2010
1 July 2010 to 31 August 2010	1 September 2010 to 13 September 2010

1 year + 1 year + 1 year + 2 months + 13 days =

3 years 2 months and 13 days

The duration from 26 June 2007 to 13 September 2010 is 3 years 2 months and 13 days.

Have a happy day.

Duration

Hello, children. How’s your school holiday? Today, we’ll learn how to calculate the duration of an event in between months, years and dates.

Example 1

Saujana IT Centre offers a few computer courses as shown in the schedule.

Saujana IT Centre

Course Schedule for 2011

1. Photoshop Course	January to April
2. PowerPoint Course	March to June
3. InDesign Course	May to September

Adrian decides to attend a PowerPoint Course. What is the duration of the course?

 

Solution:

The duration of the course is calculated from the begining of March to the end of June.

March

April

May

June

1 month + 1 month + 1 month + 1 month = 4 month

The duration from March to June is 4 months.

Adrin will attend the course for 4 months.

Example 2

Puan Hamidah worked in Sekolah Kebangsaan Setia from June 2006 to October 2009. How long did she work in that school?

Solution:

June 2006 to May 2007

June 2007 to May 2008

June 2008 to May 2009

June 2009 to October 2009

1 year + 1 year + 1 year + 5 months = 3 years and 5 months

The duration from June 2006 to October 2009 is 3 years and 5 months.

Puan Hamidah worked in Sekolah Kebangsaan Setia for 3 years and 5 months.

 

Example 3

The pupils of Class 6 Hijau started their Science project on 15 April 2011. They completed their project on 8 July 2011. What was the duration of their project?

Solution:

15 to 30 April

1 May to 30 June

1 to 8 July

From 15 to 30 April : 30 – 15 + 1 = 16 days

From 1 to 8 July   : 8 - 1 + 1 = 8 days

16 days + 2 months + 8 days = 2 months 24 days

The duration from 15 April 2011 to 8 July 2011 is 2 months and 24 days.

The duration of their project was 2 months and 24 days.

 

Now, try to complete the table below.

Event started	Event ended	Duration
July 2008	December 2008
February 2009	March 2011
26 June 2007	13 September 2010

Length

Good morning, children. Today, the topic that we learn is “length”.

The most common metric units of length used are the kilometre (km), the metre (m), the centimetre (cm) and the millimetre (mm). 

These units of length are related as follows:

1 cm = 10 mm

1 m   = 100 cm

1 km = 1000 m

We would measure the:

• thickness of the  book in millimetres (mm).
• width of a computer screen in centimetres (cm).
• width of a road in metres (m).
• distance between two cities in kilometres (km).

We can use various instruments to measure length. For example : We use rulers and tape measures that are marked in millimetres or centimetres to measure shorter lengths accurately.

Now, we learn how to convert  metric units.

1)   To convert length from a larger unit into a smaller unit, multiply by the relevant  power of 10.

2)   To convert length from a smaller unit into a larger unit, divide by the relevant  power of 10.

Example:

1)   Convert  15 cm to mm.

15  x 10mm  =  150 mm                           ( 1cm = 10 mm )

2)   Convert  145.65 m to cm.    

145.65 x 100 = 14565 cm              ( 1m = 100 cm )

3)   Convert  ¾ km to m.

¾ x 1000 = (3000 ÷ 4) cm              ( 1 km = 1000 m )

                = 750 cm

4)   Convert  60 mm to cm.

60 ÷ 10 cm = 6 cm                          ( 1cm = 10 mm )

5)   Convert  8075 cm to m.

8075  ÷ 100 m = 80.75 m               ( 1m = 100 cm )

6)   Convert  750 000 m to km.

750 000 ÷ 1000 km = 750 km        ( 1 km = 1000 m )

You should be able to work confidently with metric units to solve problems in daily life.

Have a happy day and see you tomorrow.

3D Shapes Song

Decimals

Hello, children. Today let's learn about decimals. First, you click the word - 
Decimals to start our lesson.


Now, you can try the exercise below to test if you understand the lesson.


Exercise


1)  42 - 6.75 + 3.221 - 6.51 =


2) 16.53 + 0.68 - 14.02 =


3)  18 - 6.45 - 1.8 = 46.73 - (        ) - (        )
     Calculating the total value of the two missing numbers.
4)  Add 24 to the difference of 314.464 and 19.20.


5)  P  =  2.65 - 0.821
     Q =  0.51 + 3.689
     P + Q =  ?


Now, you can check your answers here.


Answers:


1)  42.00 - 6.75 = 35.25
     35.25 + 3.221 = 38.471
     38.471 - 6.51 = 31.961


2)  16.53 + 0.68 = 17.21
     17.21 - 14.02 = 3.19


3)  18.00 - 6.45 = 11.55
     11.55 - 1.8 = 9.75
     46.73 - 9.75 = 36.98
     The total value of the two missing numbers is 36.98.


4)  314.464 - 19.20 = 295.264
     295.264 + 24 = 319.264


5)  P = 1.829
     Q = 4.199
     P + Q = 6.028


If you get all correct, well done! If you make some mistakes, make a greater effort. ^-^

Pie Chart

Hi, children. Today we will learn about pie chart.

Do you know what is a pie chart?

A pie chart is a circular chart in which the circle is divided into sectors.  Each sector visually represents an item in a data set to match the amount of the item as a percentage or fraction of the total data set.

Example

The table below shows the favourite sports of  the pupils of  6 Hijau.

Sports	No. of Pupils
Basketball	25
Netball	10
Soccer	15

Draw a pie chart to display the information.

Step 1

The total number of pupils of 6 Hijau   = 25 + 10 + 15
                                                                        = 50
Step 2
We can find what percentage of the favourite sports each item equals.

Percentage of the favourite sports on:


Basketball    = 25   x  100%  =  50%
                         50
Netball            = 10   x  100%  = 20%
                          50
Soccer            = 15   x  100%  = 30%
                          50

Step 3

To draw a pie chart, divide the circle into 100 percentage parts.  Then allocate the number of percentage parts required for each item.