第69页 - 经纶学典学霸六年级数学上下册【江苏国标】

72

$90\frac{1}{6}$

900÷[(102−87)×3]=20

$\frac{25}{18}$

240

180

D

B

A

25.5

$\frac{4}{5}$

11

=0.25×4×0.8×0.125

=0.1

=(8.76+1.24)-(5.29+2.71)

=2

$=7×\frac {1}{7}×8-7×\frac {1}{8}×8$

$=1$

$=\frac {7}{13}×(\frac {3}{4}+\frac {1}{4})$

$=\frac {7}{13}$

=20.1×(20-19)

=20.1

$=1+1-\frac {1}{2}+\frac {1}{2}-\frac {1}{4}+\frac {1}{4}-\frac {1}{8}+\frac {1}{8}-\frac {1}{16}$

$=2-\frac {1}{16}$

$=1\frac {15}{16}$

58

61

B

A