7.2×0.16= 720×=1152
75×0.8 75 1.1×6.7 6.7 1×0.99 0.99
1.333…
27.736736…
1.011212…
1.7+3=
5.5÷5=
0.3×0.7=
7a﹣a=
2.1×3=
1÷0.2=
8.4÷4=
1.4﹣0.6=
4.08×3.2= 25.48÷5.2= 4÷1.8≈(保留两位小数)
1.25×1.97×0.8 0.67×101 88×5.6+5.6×12
x÷8=4.2 57﹣x=39 2x+3x=7.5