÷= += ÷= 0×+=
×= ÷= 21÷×= ×÷×=
①
②
③
④
××
÷21÷
57×÷
÷÷
÷×
39×(×)÷
×= 0×+= 1÷=
÷= ÷= ×÷×=
×÷×= ÷×=
0÷= ×= ÷= ×÷=
×= ÷= 0.33= ×12×=
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=