4 5 x 3 10 )=- 2 1 4 July 8, 2019 16 32 64 128 4 1 2 x )- 5 x 3 10 )= 7 4 4 5 x 5 6 )- 2 3 x 1 4 )= 10 9 4 + 4 =5 4 1/2 + 1 1/3 4 - 3 + 10 รท 5 x 2