简便计算 (1) 4.05+5.5*0.9-0.12 =
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简便计算 (1) 4.05+5.5*0.9-0.12 =
简便计算
(1) 4.05+5.5*0.9-0.12
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=
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(2)7.12*6.3-7.12+4.7*7.12
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=
=
=
(3)3.2*(0.5+0.5/0.1)
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能简便就简便!不要漏题?
简便计算
(1) 4.05+5.5*0.9-0.12
=
=
=
(2)7.12*6.3-7.12+4.7*7.12
=
=
=
=
(3)3.2*(0.5+0.5/0.1)
=
=
=
=
能简便就简便!不要漏题?
![简便计算 (1) 4.05+5.5*0.9-0.12 =](/uploads/image/z/15582845-29-5.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+%EF%BC%881%EF%BC%89+4.05%2B5.5%2A0.9-0.12+%3D)
(1) 4.05+5.5×0.9-0.12
=4.5×0.9+5.5×0.9-0.12
=(4.5+5.5)×0.9-0.12
=10×9-0.12
=9-0.12
=8.88
(2)7.12×6.3-7.12+4.7×7.12
=7.12×6.3-7.12×1+4.7×7.12
=7.12×(6.3-1+4.7)
=7.12×10
=71.2
(3)3.2×(0.5+0.5/0.1)
=3.2×0.5+3.2×5
=1.6+16
=17.6
=4.5×0.9+5.5×0.9-0.12
=(4.5+5.5)×0.9-0.12
=10×9-0.12
=9-0.12
=8.88
(2)7.12×6.3-7.12+4.7×7.12
=7.12×6.3-7.12×1+4.7×7.12
=7.12×(6.3-1+4.7)
=7.12×10
=71.2
(3)3.2×(0.5+0.5/0.1)
=3.2×0.5+3.2×5
=1.6+16
=17.6