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
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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)= 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)= 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
几个意思?
34.56-(4.56-3.7)
=34.56-4.56+3.7
=30+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
=(4.99+0.01)*4
=5*4
=20
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
简便运算 1.8+8.2-1.8+8.2 34.56-(4.56-3.7) 6.6-2.91+3.简便运算1.8+8.2-1.8+8.234.56-(4.56-3.7)6.6-2.91+3.4-1.09
简便运算(求高手回答,用递等式的方法,看补充,1、 1.8+8.2-1.8+8.22、 34.56-(4.56-3.7)3、 3.125+(6.875-1.72)-3.284、 4.99+4.99+4.99+0.04+4.99
24.56-(8.2+4.56)=?
18.6/(3.7-x)=6.
4.56=?秒
把下列角度用度、分、秒的形式来表示 (1)34.56°=_____
(1+3.78+4.56)×(3.78+4.56+0.2)-(1+3.78+4.56+0.2)×(3.78+4.56)
急... 40/(1+4.56%)+40/(1+4.56%)^2+...40/(1+4.56%)^9=?
在方程正确的解后面打上√2.4x+1.8x=42 x=10 () (x+13)/7=12 x=97 ()0.72×3-7x=0.06 x=0.3 ()解方程:5x-4.5×6=5.5 2x÷0.6=4.56x-1.25x=3.8 8x-3.7+5.2=6.312.4(x-2.6)=6.2 (4.73+x)÷4.73=1列方程,并求出方程的
3.7立方米=()立方米()升
4.56元=45.6角=456分(判断题)
3.7平方米=()平方分米
1.2(x+3.7)=14.4
12.34+23.45+34.56+45.67+56.78+67.89+78.91+89.12+91.23=?
12.34+23.45+34.56+45.67+56.78.67.89+78.91+89.12+91.23=
45.6*6.7+4.56*31+0.456*20=?
4.56吨2千克=多少吨