第60页 - 苏教版数学补充习题六年级上下册答案

=789+64×13

=789+832

=1621

=720-735÷21

=720-35

=685

=666÷(901-864)

=666÷37

=18

=909×[720÷80]

=909×9

=8181

$ =\frac {2}{3}×\frac {1}{12}$

$ =\frac {1}{18}$

$ =\frac {3}{5}\div [\frac {3}{8}×\frac {2}{3}]$

$ =\frac {3}{5}\div \frac {1}{4}$

$ =\frac {12}{5}$

=48+52+169

=100+169

=269

=25×0.4×73

=10×73

=730

=43×(100+2)

=43×100+43×2

=4300+86

=4386

$ =(\frac {4}{9}+\frac {5}{9})+(\frac {3}{17}+\frac {4}{17})$

$ =1+\frac {7}{17}$

$ =1\frac {7}{17}$

$=(\frac {7}{18}+\frac {11}{18})×\frac {5}{4}$

$ =1×\frac {5}{4}$

$ =\frac {5}{4}$