口算72.5+37.5=8.09-4.16=1.25×8=4÷80=33.7-2.69=5.82+0.2=0.25×0.4=15.6÷4=0.3+710=45-0.1=25+35=89-29=12+13=34+18=15-110=56-518=0.9-910=0.8+14=0.9+17=19-0.1=

Question

口算 72.5+37.5=	8.09-4.16=	1.25×8=	4÷80=
33.7-2.69=	5.82+0.2=	0.25×0.4=	15.6÷4=
0.3+(7)/(10)=	(4)/(5)-0.1=	(2)/(5)+(3)/(5)=	(8)/(9)-(2)/(9)=
(1)/(2)+(1)/(3)=	(3)/(4)+(1)/(8)=	(1)/(5)-(1)/(10)=	(5)/(6)-(5)/(18)=
0.9-(9)/(10)=	0.8+(1)/(4)=	0.9+(1)/(7)=	(1)/(9)-0.1=

Answer 1

72.5+37.5=110	8.09-4.16=3.93	1.25×8=100	4÷80=0.05
33.7-2.69=31.01	5.82+0.2=6.02	0.25×0.4=0.1	15.6÷4=3.9
0.3+(7)/(10)=1	(4)/(5)-0.1=0.7	(2)/(5)+(3)/(5)=1	(8)/(9)-(2)/(9)=(2)/(3)
(1)/(2)+(1)/(3)=(5)/(6)	(3)/(4)+(1)/(8)=(7)/(8)	(1)/(5)-(1)/(10)=0.1	(5)/(6)-(5)/(18)=(5)/(9)
0.9-(9)/(10)=0	0.8+(1)/(4)=1.05	0.9+(1)/(7)=(73)/(70)	(1)/(9)-0.1=(1)/(90)