Question

Convert the following hours into minutes

1. 1 1/4 hour = …………. minutes

2. 2 1/2 hour = …………. minutes

3. 5 3/4 hour = …………. minutes

4. 3 1/5 hour = …………. minutes

Answer 1

(1) 1 1/4 hour = 1 hour + 1/4 hour

= 1 x 60 minutes + 1/4 x 60 minutes
= 60 minutes + 15 minutes = 75 minutes

(2) 2 1/2 hour = 2 hour + 1/2 hour

= 2 x 60 minutes + 1/2 x 60 minutes,
= 120 minutes + 30 minutes
= 150 minutes

(3) 5 3/4 hour = 5 hour + 3/4 hour

= 5 x 60 minutes + 3/4 x 60 minutes
= 300 minutes + 3 x 15 minutes
= 300 minutes + 45 minutes
= 345 minutes

(4) 3 1/5 hour = 3 hour + 1/5 hour

= 3 x 60 minutes + 1/5 x 60 minutes
= 180 minutes + 12 minutes
= 192 minutes