1-= += 12.8-2.8= =
×3= ×= ×0= ×÷×=
÷ = × ÷ × =
- = + - + =
÷0.4= + + = 1- + =
+ = 2- = ÷ = × ÷ × =
+ = 14× = + × = 1- ×0=
列式:
261﹣99= 17÷34= 2.1+0.79= 80×125%=
÷36= 38.38÷38= +×0= ×3÷×3=
86+124= ×63=49
2﹣= 1÷×=
10﹣3.6= 8.32÷4=
0.25×0.25= 0.38×90+3.8=