Question

几道简便运算，加分啊，快！！！

666×7＋58×111
二十九分之四十×18减去11×二十九分之十八＋92
八又五分之三×2.7＋62×百分之十四＋35×0.86
121乘27＋121乘60＋121乘16＋79＋12乘79
（可能有些看不懂，不好意思。没有打错。快啊）

Answer 1

666×7+58×111
=111×6×7+58×111
=111×[42+58]
=111×100
=11100
40/29×18-11×18/29+92
=18/29×[40-11]+92
=18/29×29+92
=18+92
=110
8又3/5×2.7+62×14/100+35×0.86
=8.6×2.7+62×0.14+3.5×8.6
=8.6×2.7+3.5×8.6+6.2×1.4
=8.6×[2.7+3.5]+6.2×1.4
=8.6×6.2+6.2×1.4
=6.2×[8.6+1.4]
=6.2×10
=62
121×27+121×60+121×16+79+12×79
=121×[27+60+16]+79×[1+12]
=121×103+79×13
=121×100+121×3+80×13-13
=12100+363+1040-13
=13490

Answer 2

666×7＋58×111
=111×6×7+58×111
=111×(42+58)
=111×100
=11100
二十九分之四十×18减去11×二十九分之十八＋92
=40/29×18×29*/18+92
=40+92
=132
八又五分之三×2.7＋62×百分之十四＋35×0.86
=43/5×27/10+62×14/100+35×86/100
=86/100×(54+35)+62×14/100
=86/100×89 z这题题目可能错了
121乘27＋121乘60＋121乘16＋79＋12乘79
=121×27+121×60+121×16+79×(1+12)
=121×(27+60+16)+79×13
=121×103+79×13
=121×(100+3)+13×(100-3)
=12100+363+1300-39
=13400+363-39
=13763-39
=13724

Answer 3

111x6x7+58x111=111(42+58)=11100
40x18/29-11x18/29+92=18(40-11)/29+92=110

Answer 4

523920
110
60.7848
256968277
应该是设么多吧