34.56-(4.56-3.7)= 6.6-2.91+3.4-1.09= 3.125+(6.875-1.72)-3.28
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34.56-(4.56-3.7)= 6.6-2.91+3.4-1.09= 3.125+(6.875-1.72)-3.28= 4.99+4.99+4.99+0.04+4.99= 巧算
34.56-(4.56-3.7)
=34.56-4.56+3.7
=33.7
6.6-2.91+3.4-1.09
=(6.6+3.4)-(2.91+1.09)
=10-4
=6
3.125+(6.875-1.72)-3.28
=(3.125+6.875)-(1.72+3.28)
=10-5
=5
4.99+4.99+4.99+0.04+4.99
=(5-0.01)×4+0.04
=5×4-0.01×4+0.04
=20-0.04+0.04
=20
=34.56-4.56+3.7
=33.7
6.6-2.91+3.4-1.09
=(6.6+3.4)-(2.91+1.09)
=10-4
=6
3.125+(6.875-1.72)-3.28
=(3.125+6.875)-(1.72+3.28)
=10-5
=5
4.99+4.99+4.99+0.04+4.99
=(5-0.01)×4+0.04
=5×4-0.01×4+0.04
=20-0.04+0.04
=20
简便运算 1.8+8.2-1.8+8.2 34.56-(4.56-3.7) 6.6-2.91+3.
6.72-3.28-1.72=简算
6.72-3.28-1.72=多少简算
单位换算:1.09平方千米=()公顷
方程谢谢要列式 24*(1.72+5.6x)=148.8
1.09米=( )毫米 109分米=( )米 86千克=(
1.09米=( )毫米 2.56吨=( )千克 2.3千克=( )克 4.6米=( )分米
3.28*37+6.4*32.8-3.28 = 简便
一个均匀小立方体的6个面上分别标有数字2.3.3.4.6.6,在任意掷出这个小立方体,则P(3朝上)=()
(1)5.4+8.2×0.4,=5.4+3.28,=8.68.答:和是8.68.
25乘1.72=
方程谢谢要列式 24*(1.72+5.6x)=7(x+4)