小学奥数简便算法

(33221-332.21)÷(66442-664.42)

=33221(1-0.01)/66442(1-0.01)

=33221/66442

=33221/33221*2

=1/2

=0.5

(2002002+200.2002)÷(8008008+800.8008)

=2002002(1+0.0001)/8008008(1+0.0001)

=2002002/2002002*4

=1/4

=0.25

(1234+123.4-12.34)-(2468+246.8-24.68)

=1234(1+0.1-0.01)/2468(1+0.1-0.01)

=1234/1234*2

=1/2

=0.5