(0.3 ×0.3- 0.3- 0.3)÷ 0.3=1
(0.3× 0.3÷0.3+0.3)÷ 0.3=2
(0.3+ 0.3+ 0.3+ 0.3)÷ 0.3=4
(1/2×0.4+ 3/10)× 1/5÷ 0.1=10
0.3× 0.3- 0.3 -0.3 -0.3=0
(0.3 ×0.3- 0.3- 0.3)÷ 0.3=1
(0.3× 0.3÷0.3+0.3)÷ 0.3=2
(0.3+ 0.3+ 0.3+ 0.3)÷ 0.3=4
(1/2×0.4+ 3/10)× 1/5÷ 0.1=10
0.3× 0.3- 0.3 -0.3 -0.3=0