7.05×23.7+7.05×76.3．
用简便方法计算：
1.29+3.7+0.71+6.3528×78+472×78125×89×857×101．
①12.5×3.7×0.8
②4.6×2.3+7.7×4.6
③3.6+（5.7+3.8）÷0.5
④3.6÷0.4﹣1.5×3
⑤0.1÷0.2÷0.4
⑥80.3﹣5.6×1.7．
脱式计算，能用简算的要简算．
1.3×0.75×4
1.08÷1.8×1.2
50.4×1.9﹣1.8
0.82×0.25+1.18×0.25．
怎样简便就怎样算．
0.125×4.78×802.8×3.6+1.4×2.8（0.4+40）×2.5
78.7﹣17.7×3.618÷[0.3×（8﹣6.5）]12.7+12.5+0.5．