+ = 1- = + =
- = - = - =
- = - = - = + = + =
1- = + = - = + = - =
202.2÷0.1= 13÷11= 5.6+4.4-0.53=
0.5³= ( )÷7= 1.8×0.5÷1.8×0.5=
- = + = 9.3-6.87= 12.5×8= 8-( + )=
3+ = 4- = - = -0.375= 3.68+ -0.68=
①1-= ② ③ ④ ⑤ ⑥0.2+=
(元)