Multiple Unit Multipliers Please Help?

Question

1: Use two unit multipliers to convert 625.611 centimeters to kilometers.
2.Use two unit multipliers to convert 10 miles to inches.

Thanks so much
God bless you

Answer 1

1: Use two unit multipliers to convert 625.611 centimeters to kilometers.
100 cm = 1 meter and 1000 meters = 1 km
So, 625.611 cm*1/100m/cm*1/1000 km/m= 0.00625 km

2.Use two unit multipliers to convert 10 miles to inches.

5,280 feet/ mile and 12 inches/foot
So 10 miles *5280 ft/mile* 12 in/ft = 633,600 incches.

Answer 2

1. 625.611 cm x (1 meter/100 cm) x (1 km / 1000 meter) = .00625611 km

2. 10 miles x (5280 ft / 1 mile) x (12 inches / 1 ft) = 633600 inches