Beth finds 4 + 2 = <<4+2=6>>6 ants.
CeCe finds 4 x 2 = <<4*2=8>>8 ants.
Duke finds 4 / 2 = <<4/2=2>>2 ants.
The four children find 4 + 6 + 8 + 2 = <<4+6+8+2=20>>20 ants.
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