9.25x4分之3+4分之3+4分之1x9.25
=9.25×(3/4+1/4)+3/4
=9.25+3/4
=10
5分之1÷13+5分之4x13分之1
=(1/5+4/5)×1/13
=1/13
(8-15分之8-15分之7)÷14分之1
= 【8-(8/15+7/15)】×14
=【8-1】×14
=7×14
=98
3分之2+(5分之4-3分之2)x3分之5
=2/3+2/15×5/3
=2/3+2/9
=8/9
3分之11x12.5x10分之9x8
=11/3×9/11×(12.5×8)
=3×100
=300
166x167分之166
=(167-1)×166/167
=166-166/167
=165又1/167