Question

Riley rides his bicycle 1.8 km to Jillian’s house. On the way back, he takes a route that is 740 m shorter than the first route. What is the length of the shorter route in kilometers

Answer 1

1.8 km >> 1,800 m
1,800 - 740 = 1,060 m
1,060 m >> 1.06 km
The shorter route is 1.06 km.

Answer 2

Note that 1 km = 1000 m.  Therefore,

740 m = 0.74 km, and

 1.8 km
-0.74 km
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1.  06  km           This is the length of the shorter route.