David has been driving for 4 hours at 62.8 km/hr. how many kilometers did he travel in that time?

251.2km if you multiply the speed per hr (62.8) by how many hours he drove(in this case 4 hours)you will get how far they traveled

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post

Then just do it (lol)