Of the colored paper, Barbara removed 3 * 2 = <<3*2=6>>6 sheets of paper.
Of the white paper, she removed 2 * 4 = <<2*4=8>>8 sheets of paper.
Of the scrap paper, she removed 5 * 20 = <<5*20=100>>100 sheets of paper.
So in total, Barbara removed 6 + 8 + 100 = <<6+8+100=114>>114 sheets of paper.
#### 114