Ken has 7 baseballs. Each bareball weighs 0.3 pound. Ken wants to use this model to find the total weight on the baseballs. Each hundredths block in the
model represents 1 whole
Use the drop-down menus to explain how Ken can use the model to find the total
weight of the baseballs. Click the arrows to choose an answer from each menu.
To represent the weight of one baseball, 0.3 pounds, Ken should shade 3
columns

To represent the weight of all of the baseballs, he should
shade this amount 7
times. The shaded part of the model will represent
the expression 70.3 The total weight of the baseballs is 2.1
pounds.'

I am not sure about the shading part. Please help. Thanks.