0.96÷0.4÷2 5.4+4.6÷0.5 4.8×1.6+5.2×1.6
1.3x+2.7x=0.28
10-4x=8
5×3.2+2x=24
2.65÷3.4≈(得数保留三位小数)
★2.35×1.2=
0.3×0.3=
10×0.07 =
3.25×0.2=
4.55 ×4=
0.43+3.57 =
0.7 ÷0.01 =
0.96÷3=
3.06÷2=
3.3÷[(1.3+1.2)×0.6] 7.3×7.3+2.7×7.3 7.5-1.5÷5×0.4
(6.14-3.75)÷2.5÷4 12.5×3.2×0.25
算式:5÷÷100000 问题:?
每分钟注入水量/升
20
30
________
所需时间/分钟
10
5