Question

（0.34*2400*0.25+3*7又4分之3+26.25除以3分之1）除以13分之2 简便算法！要快 急急急！！帮个忙谢谢！！！

要简便的

Answer 1

（0.34*2400*0.25+3*7又4分之3+26.25除以3分之1）除以13分之2
=(0.34*600*4*0.25+3*7+3*3/4+26*3+3/4)*13/2
=(204+21+3+78)*13/2
=306*13/2
=153*13
=1989

Answer 2

（0.34×240×0.25+3×7又4分之3+26.25÷3分之1）÷13分之2
=（0.25×4×60×0.34+3×7.75+26.25×3）÷13分之2
=（1×60×0.34+3×34）÷13分之2
=（34×0.6+3×34）÷13分之2
=34×3.6×13/2
=34×1.8×13
=61.2×13
=795.6