1.5+0.7=
5×0.35=
1.7×0.25×4=
5.2÷1.3=
8-0.58=
3.6-3.6÷9=
14.4×0.8×1.25 2.3÷0.46－3.5
0.25×3.7×40 7.86×99＋7.86
①2×0.7×1.5
②0.81×10×0.1
③5×0.2×1.3
④3.1×3×0.4
