Answer - using models:
Tuesday, October 04, 2011
P4 Math Question - Equal Stage
In a class, 1/4 of the students are boys. After 3/5 of the boys and 2/5 of the girls left the class, there were 154 students that remained. Find the total number of students in the class at first.
Answer - using models:
Make the units the same size:
Number of remaining units = 11:
Answer - using models:
P4 Math Question - Equal Stage
At the school hall, there were 30 less boys than girls. After 3/5 of the boys and 5/8 of the girls had left the hall for recess, there was an equal number of boys and girls remaining. Find the number of boys who were in the school hall at first.
Answer using model:
Answer using model:
Friday, September 30, 2011
P4 Math Question - part-whole relationship
Mr Lee spent 2/7 of his salary on a TV and 3/10 of his remaining money on a mobile phone. If he was left with $630 himself, how much was his salary?
Answer using model:
Answer using model:
Tuesday, September 27, 2011
P4 Math Question - comparison of different quantities
Q1) Sally bought 5 oranges and 7 apples for $6.05. Jean bought 7 oranges and 3 apples for $5.75. How much does each apple cost?
Answer using model:
Answer using model:
Friday, August 29, 2008
Sunday, January 20, 2008
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