=
5.7+11.8+4.3= 0÷9.856=
( ): = 608÷28≈
0.32-0.23= 10.1×99-9.9=
4 -( +0.5)= ÷2× =
1.9-0.89= 0.72= a×a= 8x-7x=
0.99+1.8= 0.012÷0.4= 0.5×0.29= 4+2.5-4+2.5=
0.15×30= 0.56÷0.7= 4.5÷0.9= 1.8×0.023.5×0=
2.5×0.6= 0.22= 10-2.75= 0.6y+0.9y-y=
169+231 = 5.5×6 = 4-0.92 = 67+39 = 201-85 =
324 ÷3 = 0.6×1.5 = 1-25% = 2÷6= 42 =
+ = - = 1- = + =
- = 0.23= 9÷4=(带分数)
23=
7.3÷0.01= 2.54×1000= 0.52= 1.2×0.8÷1.2×0.8=