4/5-（4/5-1/2）= 2/5×0×5/8= 2.5×7×4 =

Question

4/5-（4/5-1/2）= 2/5×0×5/8= 2.5×7×4 = 5+1/5= 6×5/8+5/8×2= 1+45%= 1-30%= 9/13÷100%= ( 直接写得数)

Answer 1

4/5-（4/5-1/2）=1/2
2/5×0×5/8=0
2.5×7×4 =70
5+1/5=5又1/5
6×5/8+5/8×2=5
1+45%=1.45
1-30%=0.7
9/13÷100%=9/13

Answer 2

4/5-4/5=1/2
2/5x0x5/8=0
2.5x7x4=10x7=70
5+1/5=5.2
6x5/8+5/8x2=30/8+10/8=40/8=5
1+45%=1.45
1-30%=0.7
9/13x100%=9/13

Answer 3