iMath | Community

Serene Seah

Asked 9 years ago

Thanks Vei Li for the add =)

Replies 0

Vanitha Guna

Asked 9 years ago

SG Primary 4 Fractions

Need help. Know that the solution is wrong . How to explain the child ?AS her mother received 99 more fruits than each child- My child multiplies 99*5= 495.

Replies 7

Kai Meng

As in the drawn model, 1/4 of total, represented by the big rectangle is equal to 5 small rectangles. So cut up each big rectangle into 5 small ones. Let's call each small rectangle "u". Then what the mother receives is 10u and each child gets 1u. So 10u-1u=9u --> 99. 1u --> 11 Original total: 20u --> 220.

6 years ago

Vanitha Guna

Thank you

6 years ago

Kai Meng

You're welcome!

6 years ago

Adrian Ng

6 years ago

Vanitha Guna

Thanks Adrian Ng

6 years ago

Soo Vei Li

Part of the problem solving process should include checking the answer. In this case, it is good for your child to use his/her answer and work backwards and see if the conditions are met (eg, amount father gets, mother gets 99 more than each child, etc). This way, your child can 'see' why the answer can't be correct.

6 years ago

Pieter Cronje

The word " more" can be a bit confusing. "More" can be more x. Child gets 5 so mom gets 5x99. Here was meant "plus 99" more than the children. The english language can have subtle differences. We should try to explain the words clearly .

6 years ago