Question

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

Answer 1

Answer:

18.75 minutes or 0.3 (3/10 or almost 1/3)

Step-by-step explanation:

Carlos spent $1\frac{1}{4}$hours doing math. If an hour is 60 minutes, this means he spent 60 minutes and 1/4 of 60 minutes which is 15 minutes. In total he spent 75 minutes on math.

We also know he spent 1/4 of that 75 minutes on multiplication facts. How long did he spend?

We will multiply by the two quantities to find the amount.

$\frac{1}{4} (75)=\frac{75}{4} = 18.75 minutes$

We will convert this back into hours by dividing it by 60 minutes since 60 minutes= 1 hour.

$\frac{18.75}{60} =0.31$

He spent 0.3 or 3/10 or about 1/3 of his time on multiplication facts.