(1)7.64+6.42=
(2)9.31+3.31=
(3)1.44+1.02=
(4)3.42-2.19=
(5)8.13-7.79=
(6)8.96-5.27=
(7)7.37+6.17=
(8)3.77-3.00=
(9)2.10+2.34=
(10)1.48+4.54=
(11)7.69+9.31=
(12)7.83+1.96=
(13)7.45-5.77=
(14)8.98-7.83=
(15)3.08+9.01=
(16)9.17+4.62=
(17)3.79+3.20=
(18)9.51-8.59=
(19)5.64-2.98=
(20)9.86-8.20=
