Toby needs to bike 3 miles a day. He rides 1 5/8 miles to school, then 1/2 to the store. how many more miles does Toby need to ride to get 3 miles. Do I Add or multiply. Help

Add the amount he rides. Then subtract that sum from 3.

Mia rides her bike 15 1/4 miles every day. How many miles does Mia ride in 4 days

To find out how many more miles Toby needs to ride to get a total of 3 miles, we need to subtract the distance he has already ridden from the target distance of 3 miles.

First, let's calculate the total distance that Toby has ridden. Toby rides 1 5/8 miles to school and then an additional 1/2 mile to the store.

To add these two distances, you can find a common denominator, which will be 8.

1 5/8 can be written as 13/8 and 1/2 can be written as 4/8.

Now we can add these two fractions together:

13/8 + 4/8 = 17/8

So Toby has ridden a total of 17/8 miles.

Next, we subtract this distance from the target distance of 3 miles:

3 - (17/8)

To subtract these fractions, we again need a common denominator, which is 8.

3 can be written as 24/8.

Now we can subtract the fractions:

24/8 - 17/8 = 7/8

Therefore, Toby still needs to bike an additional 7/8 of a mile to reach a total of 3 miles.

To summarize, Toby needs to bike 7/8 of a mile more to reach a total of 3 miles.