897100 rounded to the nearest ten thousand

Five friends found a dollar on the ground and decided they each should get 1/5 of it. what amount of money will each friend get? $0.05 $0.20 $0.30 $0.80

Aparachutist descends 38 in 2 seconds . express the rate of the parachutists change in height as a unit rate

Use the balanced scale to find the conversion factor that can be used to convert the number of blocks to the weight of the blocks in pounds.