四、计算下面各题,怎样简便就怎样计算。(每题3分,共36分)
$240×(\frac{1}{3}+75\%)$ $91÷1.25÷8 + 26.3$ $\frac{17}{20}-60\%×1.5+\frac{3}{20}$
$7÷\frac{9}{11}+2÷\frac{9}{11}$ $4.5×4.36 + 0.55×43.6$ $32×(1 - 37.5\%)÷\frac{5}{9}+\frac{1}{2}$
$42×(\frac{2}{3}+\frac{3}{7}-\frac{9}{14})$ $0.95 - \frac{4}{11}+3.05 - \frac{7}{11}$ $90\%÷[25\%×(\frac{4}{15}+40\%)]$
$10.6-(4.6 + 1.3×0.9)$ $\frac{14}{45}×22 + 14×\frac{23}{45}$ $\frac{7}{9}÷[8×(\frac{1}{3}+25\%)]$
$240×(\frac{1}{3}+75\%)$ $91÷1.25÷8 + 26.3$ $\frac{17}{20}-60\%×1.5+\frac{3}{20}$
$7÷\frac{9}{11}+2÷\frac{9}{11}$ $4.5×4.36 + 0.55×43.6$ $32×(1 - 37.5\%)÷\frac{5}{9}+\frac{1}{2}$
$42×(\frac{2}{3}+\frac{3}{7}-\frac{9}{14})$ $0.95 - \frac{4}{11}+3.05 - \frac{7}{11}$ $90\%÷[25\%×(\frac{4}{15}+40\%)]$
$10.6-(4.6 + 1.3×0.9)$ $\frac{14}{45}×22 + 14×\frac{23}{45}$ $\frac{7}{9}÷[8×(\frac{1}{3}+25\%)]$
答案
260 35.4 0.1
11 43.6 $36\frac{1}{2}$
19 3 $\frac{27}{5}$
4.83 14 $\frac{1}{6}$
11 43.6 $36\frac{1}{2}$
19 3 $\frac{27}{5}$
4.83 14 $\frac{1}{6}$
登录