Question

4 -16*1/8
10(1/5-0,1)
(3/4+0,25)*3
3/8*8-25*2

Answer 1

4-16*1/8=4-16*0,125=4-2=2
10(1/5-0,1)=10(0,2-0,1)=10*0,1=1
(3/4+0,25)*3=(0,75+0,25)*3=3
3/8*8-25*2=0,375*8-25*2=3-50= -47

Answer 2

4 - 16 * 1/8 = 4 - 16/8 = 4 - 2 = 2 
10 (1/5 - 0,1) = 10 (0,2 - 0,1) = 10 * 0,1 = 1                    (1/5 = 0,2)
(3/4 +0,25) * 3 = (3/4 + 1/4) * 3 = 4/4 * 3 = 1 * 3 = 3       (0,25=1/4)
3/8 * 8 - 25 * 2 = 3/1 * 1 - 50 = 3 - 50 = -47