Question

分数的简便运算： 1.1.25X10又3/5+3除以4/5+1.64X12.5+10X1又1/4 2.

Answer 1

1.25X10又3/5+3除以4/5+1.64X12.5+10X1又1/4
=1.25X(10+3/5)+3÷(4/5)+1.64X12.5+10X(1+1/4)
=1.25X10.6+3X1.25+16.4X1.25+10X1.25
=1.25X(10.6+3+16.4+10)
=1.25X40
=1.25X4X10

=5X10
=50

Answer 2

1.25X10又3/5+3除以4/5+1.64X12.5+10X1又1/4
=5/4X10又3/5+3X5/4+16又2/5X5/4+10X5/4
=5/4X(10又3/5+16又2/5+3+10)
=5/4X40
=50