用简便方法计算,3道,过程要写 给20财富!
(1)0.37x12.5x0.15x8x2(2)17.48x37-174.8x1.9+17.48x82(3)14.5+7.65x4+25.5+2.35x4+40...
(1) 0.37 x 12.5 x 0.15 x 8 x 2
(2) 17.48 x 37 - 174.8 x 1.9 + 17.48 x 82
(3) 14.5 + 7.65 x 4 + 25.5 + 2.35 x 4 + 40 展开
(2) 17.48 x 37 - 174.8 x 1.9 + 17.48 x 82
(3) 14.5 + 7.65 x 4 + 25.5 + 2.35 x 4 + 40 展开
3个回答
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(1) 0.37 x 12.5 x 0.15 x 8 x 2
=0.37×0.15×2×12.5×8
=0.37×0.3×100
=0.111×100
=11.1
(2) 17.48 x 37 - 174.8 x 1.9 + 17.48 x 82
=17.48×37-17.48×19+17.48×82
=17.48×(37-19+82)
=17.48×100
=1748
(3) 14.5 + 7.65 x 4 + 25.5 + 2.35 x 4 + 40
=14.5+25.5+4×(7.65+2.35)+40
=40+4×10+40
=120
不懂可追问,有帮助请采纳,谢谢!
=0.37×0.15×2×12.5×8
=0.37×0.3×100
=0.111×100
=11.1
(2) 17.48 x 37 - 174.8 x 1.9 + 17.48 x 82
=17.48×37-17.48×19+17.48×82
=17.48×(37-19+82)
=17.48×100
=1748
(3) 14.5 + 7.65 x 4 + 25.5 + 2.35 x 4 + 40
=14.5+25.5+4×(7.65+2.35)+40
=40+4×10+40
=120
不懂可追问,有帮助请采纳,谢谢!
追问
3Q啦,后天开学,我急忙补作业!你帮我2次了
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(1) = 0.37 x 【12.5 x 8 】x 【0.15 x 2】=30x0.37=11.1
(2) = 17.48 x 37 - 17.48 x 19 + 17.48 x 82=17.48x(37-19+82)=1748
(3) = 14.5 + 25.5 + 【7.65 x 4 + 2.35 x 4】 + 40=40+40+40=120
(2) = 17.48 x 37 - 17.48 x 19 + 17.48 x 82=17.48x(37-19+82)=1748
(3) = 14.5 + 25.5 + 【7.65 x 4 + 2.35 x 4】 + 40=40+40+40=120
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(1) 0.37 x 12.5 x 0.15 x 8 x 2 =12.5X8X0.15X2X0.37=100X0.3X0.37=11.1
(2) 17.48 x 37 - 174.8 x 1.9 + 17.48 x 82 =17.48X(37-19+82)=17.48X100=1748
(3) 14.5 + 7.65 x 4 + 25.5 + 2.35 x 4 + 40=14.5+25.5+(7.65+2.35)X4 +40 =120
(2) 17.48 x 37 - 174.8 x 1.9 + 17.48 x 82 =17.48X(37-19+82)=17.48X100=1748
(3) 14.5 + 7.65 x 4 + 25.5 + 2.35 x 4 + 40=14.5+25.5+(7.65+2.35)X4 +40 =120
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