负七分之二十二,π,0,0.333 其中3个是有理数.(π不是有理数,不能用分数表示)
(-3又1/3)+(+2又21/2)
= -10/3 +25/2
= -20/6 =75/6
=55/6
=9又1/6
(+26)+(-5.16)+(-1.44)+(+5.16)+(-18.56)
=26-5.16-1.44+5.16-18.56
=26-5.16+5.16-(18.56+1.44)
=26-20
=6
4.1+(+1/2)+(-1/4)+(-10.1)+7
=4.1+0.5-0.25-10.1+7
=1.25