6.9-6= 0.9+0.6= 1-0.09= 0.9+0.1=
2.7+2.2= 0.2+0.8= 0.7-0.7= 5.5+11=
1.3-0= 9.7-7= 0.93+0.73= 13.8-0.8=
0.6+2.7= 5.4+0.3= 0.65+0.35= 0.8+8=
①15.1+11.9
②9.2-8.75
③10+8.75
④9.82-6.18
⑤27.09-9.28
⑥22.45-19.15
⑦69.07+2.88
⑧9.3+2.34
①32+6.4+68+3.6
②10.27+0.4-8.27
③18.51-9.03-0.97
④64.3-18.75+15.7-11.25
⑤7.41-(2.96+3.04)
⑥4.28+2.08+3.62