零五网 › 全部参考答案› 通城学典课时作业本答案 › 通城学典课时作业本六年级数学苏教版江苏专用 › 第47页

第47页

信息发布者：

121

0.4

4.5

200

4.5

 $6×(22÷4)-1.4=31.6$

(9÷3+1)×6=24

(6-3)×(9-1)=24

 $\frac{1}{4}÷\frac{7}{6}÷\frac{5}{2}÷\frac{3}{8}×\frac{7}{5}=\frac{8}{25}$

$=\frac {9}{10}÷(\frac {1}{2}×\frac {5}{10})$

$=\frac {9}{10}÷\frac {1}{4}$

$=\frac {18}{5}$

$=\frac {1}{3}+\frac {2}{9}+\frac {2}{3}$

$=1+\frac {2}{9}$

$=1 \frac {2}{9}$

$=\frac {5}{19}×(\frac {4}{11}+\frac {7}{11})$

$=\frac {5}{19}×1$

$=\frac {5}{19}$

$=1+\frac {48}{49}+\frac {1}{49}$

$=1+1$

$=2$

=2.5×0.4×7.2

=1×7.2

=7.2

=(375+25)-(47+153)

=400-200

=200

$=(43-1)×\frac {42}{43}$

$=42-\frac {42}{43}$

$=41 \frac {1}{43}$

=18+16

=34

(6+36)÷3-2×4-1=5

(6+36÷3-2)×4-1=63

6+36÷[(3-2)×(4-1)]=18

 $\begin{aligned}3\frac{3}{5}×27\frac{4}{5}+40\frac{3}{10}×6\frac{2}{5}&=3.6×27.8+40.3×6.4\\&=3.6×27.8+(27.8+12.5)×6.4\\&=3.6×27.8+27.8×6.4+12.5×6.4\\&=(3.6+6.4)×27.8+12.5×0.8×8\\&=10×27.8+10×8\\&=278+80\\&=358\end{aligned}$