4.12*10.1= 1.25*3.2*5= 8.7*4.3+8.7*5.7=
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/16 11:26:48
4.12*10.1= 1.25*3.2*5= 8.7*4.3+8.7*5.7=
要简便计算 4.12*10.1= 1.25*3.2*5= 8.7*4.3+8.7*5.7= 8个4.05比5.多多少?
要简便计算 4.12*10.1= 1.25*3.2*5= 8.7*4.3+8.7*5.7= 8个4.05比5.多多少?
4.12*10.1= 4.12*(10+0.1)
=4.12*10+4.12*0.1
=41.2+0.412
=41.612
1.25*3.2*5=1.25*8*0.4*5
=10*2
=20
8.7*4.3+8.7*5.7=8.7*(4.3+5.7)
=8.7*10
=87
8个4.05比5.7
即8×4.05-5.7
=8*(4+0.05)-5.7
=32+0.4-5.7
=32.4-5.7
=26.7
=4.12*10+4.12*0.1
=41.2+0.412
=41.612
1.25*3.2*5=1.25*8*0.4*5
=10*2
=20
8.7*4.3+8.7*5.7=8.7*(4.3+5.7)
=8.7*10
=87
8个4.05比5.7
即8×4.05-5.7
=8*(4+0.05)-5.7
=32+0.4-5.7
=32.4-5.7
=26.7
8.7.6.5.4.3.2.=40怎么计算
简便方法:8.7*2.6+6.4*8.7+8.7=?
解下列方程:1.18X-1.9X=19.38 2.16+5.2X=156.4 3.3(x+2)=8.7 4.12×5+4
8.7=几分之几
8.7*(36.6-x)=0
8.7x-0.18=5x+0.12
0.95*4+6x=5 4.2(x-2)=8.4 (x+3.2)*0.4=1.6 x-1.1+0.6=2.4 8.7(x
方程bx-5.2=0.3与26x-4.3=8.7的解相同,求b+2.1的值
8.7+9.5-4.9+85.9-7.6=
.8- 9 .= 2 75 8.7
8.7-1.2x=3.9解方程
解方程:9.2—x=8.7