1+1%=
3.14×0.5=
0.1÷0.1÷0.01=
5÷-÷5=
0.32-0.22=
÷4=
-×0.8=
0.15:0.3=
16.5÷10%=
1-+=
1.05×=
×÷×=
1-0.62=
-×=
1.5a-a=
0.9×9.9+0.09=
① ② ③ ④ ⑤ ⑥
3.14×11-3.14= 0.22= 0.9÷0.01=
0.2- = 0.5×= 3÷×3=
100×÷0.1= ×3÷×3= 157÷3.14=
3.14×20= + = 0.5÷0.01= 0.32× =
21÷21%= × = 6-3 = ÷ =
1-0.45=
502-197=
120×50=
80×40%=
602+297≈
1.8×=
15÷=
21×(+)=
时75分 3吨40千克3.4吨
5200立方厘米5.2升 4.5公顷450平方米