如题所述
(1)、4.32x101-4.32
=4.32×100+4.32-4.32
=432
(2)、2.5x0.8-1.8x0.5
=2.5×0.8-0.5×(1+0.8)
=2.5×0.8-0.5×1-0.5×0.8
=(2.5×0.8-0.5×0.8)-0.5×1
=(2.5-0.5)×0.8-0.5
=2×0.8-0.5
=1.6-0.5
=1.1
望采纳………………
不懂问追问
=4.32×100+4.32-4.32
=432
(2)、2.5x0.8-1.8x0.5
=2.5×0.8-0.5×(1+0.8)
=2.5×0.8-0.5×1-0.5×0.8
=(2.5×0.8-0.5×0.8)-0.5×1
=(2.5-0.5)×0.8-0.5
=2×0.8-0.5
=1.6-0.5
=1.1
望采纳………………
不懂问追问
谢谢🌹
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第1个回答 2016-04-18
(1)
=4.32(101-1)
=4.32×100
=432
(2)
=0.5×5×0.8-1.8×0.5
=0.5×4-1.8×0.5
=0.5(4-1.8)
=0.5×2.2
=1.1追问
=4.32(101-1)
=4.32×100
=432
(2)
=0.5×5×0.8-1.8×0.5
=0.5×4-1.8×0.5
=0.5(4-1.8)
=0.5×2.2
=1.1追问
谢谢🌹
第2个回答 2016-04-18
4.32×101-4.32
=4.32×(101-1)
=4.32×100
=432追答
=4.32×(101-1)
=4.32×100
=432追答
2.5×0.8-1.8×0.5
=0.5×0.8×5-1.8×0.5
=0.5×(4-1.8)
=0.5×2.2
=11
谢谢🌹
第3个回答 2016-04-18
432追答
1.1
追问谢谢🌹
第4个回答 2016-04-18
追问
谢谢🌹
第5个回答 2016-04-18
追问
谢谢🌹