-10.8=6 14.3-=5.7
0.3+20.5 5.73-4.850.89
1-0.01= 1.41-0.40= 0.4+0.6=
3.4+0.62= 8.04-3.84= 5-0.3-0.2=
18.5-13.5+1= 0.63+1.8+0.37= 12.37+9.13=
=17.23-7.23+8.5
=10+8.5
=18.5
=5.85-(1.75+0.25)
=5.85-2
=3.85
①4.35+8.6+15.65+1.4
②19.32-5.56-3.44
③37.6-(7.6+3.25)
④5.49+2.68-3.49
⑤6.17+3.83+1.77
⑥8.4+2.5-8.4+3.5
姓名
刘娟
周秋梅
李晓红
石芳
成绩(秒)
17.4
18.8
18.6
17.2