PPrriimmarryy56 Date : Writing numerical expression by using G.C.F Write the Expression using G.C.F of the addition problem . 20 + 60 = 20 x ( 1 + 3) 20 60 6 10 60 = 2 × 2 × 5 × 3 2 10 2 32 5 20 = 2 × 2 × 5 25 GCF = 2 × 2 × 5 = 20 4