Grandpa mick opened a pint of ice cream. he gave his youngest grandchild 1/5 of the ice cream and his middle grandchild 1/4 of the remaining ice cream. then, he gave his oldest grandchild 1/3 of the ice cream that was left after serving the others.
a. who got the most ice cream? how do you know? draw a picture to support your reasoning.
b. what fraction of the pint of ice cream will be left if grandpa mick serves himself the same amount as the second grandchild?

a. They all get the same quantity of ice cream.

b. Fraction of the pint of ice cream that will be left is 1/5

Step-by-step explanation:

Tape diagram is attached to support reasoning.

a. Youngest grandchild 1/5 of the ice cream

Middle grandchild 1/4 of the remaining ice

The remaining ice is 4/5.  

To get how much he gave to the middle grandchild we make 1/4 x 4/5

For fraction multiplication, multiply the numerators and then multiply the denominators to get

1×4/4×5=4/20

This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 4 and 20 using

GCF(4,20) = 4

=1/4×4/5=1/5

We make the same for the last grand child.  

Remaining ice is 3/5 ( we discount the previous servings)

=1/3 x 3/5= 1/5

b. If Grandpa serves himself the same amount, 1/5,

That will be 1/5 for each person ( they are 4 persons),  we use 4/5

Then, will be left 1/5

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490