Q&A - P3 Math
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Yes Funz, answer is 77 but the child not taught algebra. That’s why I use the guess and check method. Thinking whether anyone has any other method??
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peapot:
When the bigger number is divided by the smaller number, the quotient is 7.Pls let me know what method to use for this q.
The difference between 2 numbers is 66. When the bigger number is divided by the smaller number, the quotient is 7. Find the bigger number.
I taught my child to use \"guess and check\". Is there any better way??
That is to say the bigger number is 7 times the smaller number.
Hence bigger number = 7u or 7 boxes ( for model)
smaller number = u or 1 box (for model)
Difference = 66
therefore 6u = 66
1u = 11
bigger number = 7u = 77 -
peapot:
Yes Funz, answer is 77 but the child not taught algebra. That's why I use the guess and check method. Thinking whether anyone has any other method??
Yah. My brain is stuck using algebra.
Gotta use algebra to find answer then work backwards to draw models for DD.
Smaller number is []
bigger number is [] [] [] [] [] [] []
bigger number is 66 more then smaller number. Going by the drawing, bigger number has 6[] more then smaller number, 6[]=66
so each [] is 11
bigger number is 77. -
Yes, Yes, yes!!! thanks mummies!!!
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Can someone please help on this question?
Jack sold a total of 285 apples and pears. He sold twice as many apples as as pears. how many more apples than pears did he sell? -
bumbum:
HiCan someone please help on this question?
Jack sold a total of 285 apples and pears. He sold twice as many apples as as pears. how many more apples than pears did he sell?
Good Morning.
You may use MD.
Apples ------ 2 units
Pears ------- 1 unit
3 units ------- 285
1 unit ------- 95
He sold 95 more apples than pears.
Best wishes -
tianzhu:
Thk. This is actually Tao nan prev sa paper. Answer written is 175. But yrs answer is wat I thought too. So I guess we are right then.
Hibumbum:
Can someone please help on this question?
Jack sold a total of 285 apples and pears. He sold twice as many apples as as pears. how many more apples than pears did he sell?
Good Morning.
You may use MD.
Apples ------ 2 units
Pears ------- 1 unit
3 units ------- 285
1 unit ------- 95
He sold 95 more apples than pears.
Best wishes -
I think the answer is 95, similar to tianzhu.
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What is the fastest method to solve this type of question?
Darren has some 10-cent coins, 20-cent coins and 50-cent coins in his pocket that add up to $2. He has exactly 9 coins. How many 20-cent coins does he have? -
cathycho:
HiWhat is the fastest method to solve this type of question?
Darren has some 10-cent coins, 20-cent coins and 50-cent coins in his pocket that add up to $2. He has exactly 9 coins. How many 20-cent coins does he have?
First, is this a multiple choice question where four options are available for students to choose?
The numbers are not too big, so it’ll not be tedious to arrive at an answer if choices are given.
If not, use “Systematic Listing”, it’s also not too tedious as we are dealing with small numbers.
The answer is 3 20-cent coins.
Best wishes
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