递等式计算,能简便的要简便计算。 4,2+12,36+5,8+2,64 7,41-2,9
递等式计算,能简便的要简便计算。4,2+12,36+5,8+2,647,41-2,96-4,0445,68-7,7+2.34.6-(1.75+2.6)20.22+15.7...
递等式计算,能简便的要简便计算。
4,2+12,36+5,8+2,64
7,41-2,96-4,04
45,68-7,7+2.3
4.6-(1.75+2.6)
20.22+15.7-0.22+4.3
7.59-2.6+4.41-3.4 展开
4,2+12,36+5,8+2,64
7,41-2,96-4,04
45,68-7,7+2.3
4.6-(1.75+2.6)
20.22+15.7-0.22+4.3
7.59-2.6+4.41-3.4 展开
4个回答
展开全部
4,2+12,36+5,8+2,64
=(4.2+5.8)+(12.36+2.64)
=10+15
=25
7,41-2,96-4,04
=7.41-(2.96+4.04)
=7.41-7
=0.41
=(4.2+5.8)+(12.36+2.64)
=10+15
=25
7,41-2,96-4,04
=7.41-(2.96+4.04)
=7.41-7
=0.41
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2016-03-31
展开全部
4.2+12.36+5.8+2.64
=(4.2+5.8)+(12.36+2.64)
=10+15
=25
7,41-2,96-4,04
=7,41-(2,96+4,04)
=7,41-7
=0.41
45,68-7,7+2.3
=45,68-(7.7-2.3)
=45,68-5.4
=40.28
4.6-(1.75+2.6)
=4.6-2.6-1.75
=2-1.75
=0.25
20.22+15.7-0.22+4.3
=(20.22-0.22)+(15.7+4.3)
=20+20
=40
7.59-2.6+4.41-3.4
=(7.59+4.41)-(2.6+3.4)
=12-6
=6
=(4.2+5.8)+(12.36+2.64)
=10+15
=25
7,41-2,96-4,04
=7,41-(2,96+4,04)
=7,41-7
=0.41
45,68-7,7+2.3
=45,68-(7.7-2.3)
=45,68-5.4
=40.28
4.6-(1.75+2.6)
=4.6-2.6-1.75
=2-1.75
=0.25
20.22+15.7-0.22+4.3
=(20.22-0.22)+(15.7+4.3)
=20+20
=40
7.59-2.6+4.41-3.4
=(7.59+4.41)-(2.6+3.4)
=12-6
=6
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