0.6×100 6 9.1×1.1 9.1 3.25×5.7 32.5×0.57
8.7×0.98.7 3.7×300 37×30 0×97×0.7
①+++
②(-+)×24
③1.5×+8.5×
④4×0.8×2.5×12.5
⑤25××40%×
⑥÷[(+)×]
15+8= ﹣0.3= 13×0.6= 2.8÷0.7=
×= ÷2= += 52=