Question

Carlos spent 1 1/4 hours doing his math homework. He spent 1/4 of this time practicing his multiplication facts.

How many hours did Carlos spend practicing his multiplication facts?

Answer 1

Carlos spent 15 minutes practicing his multiplication facts.

Explanation:
An hour is 60 minutes, Carlos practiced his multiplication facts for 1/4 of an hour.

First you must do 60 divided by 4 which is 15. 1/4 of an hour is 15 minutes.

Answer 2

`(5)/(16)` hours

Explanation:

We have been given that Carlos spent 1 1/4 hours doing his math homework. He spent 1/4 of this time practicing his multiplication facts.

To find the time spend by Carlos on practicing his multiplication facts, we need to calculate 1/4 of 1 1/4.

1/4 of 1 1/4 means multiplying 1/4 by 1 1/4 as:

`(1)/(4)* 1(1)/(4)`

Convert mixed fraction to improper fraction:

`1(1)/(4)\Rightarrow (1* 4+1)/(4)=(4+1)/(4)=(5)/(4)`

`(1)/(4)* 1(1)/(4)\Rightarrow(1)/(4)*(5)/(4)`

`(1* 5)/(4* 4)`

`(5)/(16)`

Therefore, Carlos spent
`(5)/(16)` hours practicing his multiplication facts.