5 x 10 3 x 9 x 10 7 July 8, 2019 16 32 64 128 5 x 10 3 x 9 x 10 7 in standard form 7.5 x 10 15 3 x 10 9 1.3 x 10 5 5 x 9/10 5 x 7 = 35 5 x 5 x 5 x 5 x 5 3 x-5=x+3