Renee jogs 2.5 miles 4 days a week. She calculates that she jogs a total of 10 miles each week. Use the drop-down boxes to explain how Renee could use place-value patterns to check her answer.

Step-by-step explanation:

Given that Renee jogs 2.5 miles 4 days of a week,

Her total distance in a week = distance × number of days

                                         = 2.5 × 4

                                         = 10

Renee jogs a total of 10 miles in a week.

The place value of 2 is unit and 5 is tenths, so Renee jogs for 2 unit and 5 tenths of miles 4 day in a week.

Her total distance in a week = 2 unit 5 tenths + 2 unit 5 tenths+ 2 unit 5 tenths + 2 unit 5 tenths

But,

5 tenths + 5 tenths + 5 tenths + 5 tenths = 2 unit

2 unit + 2 unit + 2 unit + 2 unit = 8 unit

Her total distance in a week = 8 unit + 2 unit

                                               = 10

Her total distance in a week is 10 miles.