Tuesday, 26 June 2012

PROBLEM SOLVING QUESTION

Ramli has 560 stamps. 40 % of them are domestic stamps and the remainder are foreign stamps. How many foreign stamps does Ramli have ?
ரம்லியிடம் 560 தபால் தலைகள் இருந்தன. அவற்றில் 40 % உள்நாட்டுத் தபால் தபால் தலைகளும் எஞ்சியவை வெளிநாட்டுத் தபால் தலைகளும் ஆகும். ரம்லியிடம் உள்ள வெளிநாட்டுத் தபால் தலைகள் எத்தனை ?


 Method 1/ வழிமுறை 1        Method 2/ வழிமுறை 2            

 Step 1 / படி 1                                                             Step 1 / படி 1

=       40  x  560                                  100 % - 40 % = 60 %
     100
=   4 x 56                                          Step 2 / படி 2 
=  224                                        
                                                         =  60   x 560  
Step 2 / படி 2                                                               100
                                                         =  336
560 - 224 =  336

Monday, 25 June 2012

CONVERT UNITS


Example 1                                                                       Example 2

12.8 kg + 3.7 kg = 16.5 kg                      8.5 km -  250 m = 8250 m


     12.8   kg                                                 Convert km to m    
 +    3.7   kg                                                     
     16.5   kg                                              8.5 km x 1000 = 8500 m 
                                                                                                     
                                                                                       8500 m
                                                                                  -      250 m
                                                                                       8250 m 

Example 3
2480 g + 150 g =  2.63 kg
           2480 g                 Convert g to kg
     +      150 g                  2630 g ÷ 1000 = 2.63 kg
           2630 g


Saturday, 23 June 2012

MIXED OPERATION

Year 4 ( Example 1)                                           Year 5 ( Example 2)    

Left to right method                             Left to right method

250 + 78 - 35 =  293                             642 ÷ 2 x 3 = 963

     250                                                   642 ÷   2 = 321
 +   78 
    328                                                         321 
 -   35                                                       x     3        
   293                                                                                      963    


UPSR

BODMAS

Example 1                                                 Example 2

103 - 56 ÷ 4 = 89                                            ( 252 + 84 ) ÷ 14 = 24

56 ÷ 4 = 14 ( solve divide first)                       252 + 84 = 336
                                                                                ( solve bracket first)
103 - 14  = 89 ( Then minus )                          336 ÷  14  = 24
                                                                                                             ( Then divide ) 


PERCENTAGE

Example 1                        Example 2                           Example 3

20 % of  240                 30 % of  RM 3600                25 % of 1.5 kg 

20  x  240                =   30   x  RM 3600              =  25  x   1500 g
   100                              100                                      100
=  48                             =  RM 1080                          =  375 g

Wednesday, 20 June 2012

DECIMAL

Decimal (Y4, Y5 and UPSR )

   Example 1                                   Example 2

  12.5 +  3.4 =  15.9                        25 - 8.75 = 16.25

Write in standard written method

    12 . 5                                           25 . 00
 +   3 . 4                                       -    8 . 75
    15 . 9                                           16 . 25 

Tuesday, 19 June 2012

TIME

Convert Units Of Time

1 hour = 60 minutes                                    Convert 12-hour system to 24-hour system
1 minutes = 60 seconds                      
1 day = 24 hours
1 week =  7 days                                                         07 : 30 p.m.
1 year = 12 months                                             +      12   00         
1 decade = 10 years                                                    19   30 hours
1 century = 10 decades
1 century = 100 years                                 Convert 24-hour system to 12-hour system
1 year = 365 days                                       
                                                                                 20 45 hours
                                                                            -    12 00          

                                                                                  8: 45 p.m.

Sunday, 17 June 2012

Techniques Of Problem Solving


Teaching And Learning Strategies

1. Draw a Diagram
2. Finding Facts
3. Using Logic
4. Working Backwords
5. Guessing And Checking
6. Make a table Chart / Systematic
7. Choosing the Operation
8. Identifying Pattens and Sequences


Based on Polya’ Model

  • Understanding the problem
  • Devising a plan
  • Carrying out the plan
  • Looking back at the solution