Math thinking Question

Question

Natalie practices the piano every day. On Monday she practiced for 10 minuets. If she practices every day for 10 minutes, on which day of the week will she have practiced for 90 minutes

Answer 1

Let's start by thinking about how much she practices each day and write that out. So it says she practices 10 minutes a day.

Monday - 10 minutes

Tuesday - 10 minutes

Wednesday - 10 minutes

and so on.

Now if I ask you, how long did she practice on Monday and Tuesday, we see that it is 10+10=20. So keep doing this for Monday, Tuesday, and Wednesday and then Monday, Tuesday, Wednesday, and Thursday, until you reach 90 minutes.

Answer 2

We can list the day of the week, along with the total (cumulative) time spent practicing.

Monday: 10 minutes

Tuesday: 20

Wednesday: 30

Thursday: 40

Friday: 50

Saturday: 60

Sunday: 70

Monday: 80

Tuesday: 90

She will have practiced 90 minutes on Tuesday.