4.6×15= 0.46×0.15= 15.75÷15=
4.6÷100= 100×0.9= 1.5×6= 0.2×50=
9.6÷4= 0.85-0.5= 42×0.3= 0.54÷6=
0.4×2.5÷2.5×0.4= 7.2÷0.8÷1.25=
①4.8×18.4+4.8×1.6
②1.72+0.28×1.2
③8.5×101-8.5
④0.25×1.25×3.2
⑤135÷[(3.45-1.65)×2.5]
⑥3.7÷2.5÷0.4