(9.52+3.75)+1.25=9.52+(+)
4.8+5.7= 4.36+1.64= 9-2.5=
10-0.36= 2.39+1.25= 5.38-4.28=
0.36+0.47= 0.91-0.38= 2.4+3.6-1.2=
4.5-1.2+0.4= 7.25+1.73+2.75= 10-0.15-0.85=
=(+)(+)
①24.56+1.29+5.44+3.71
②10.37-5.17-2.83
③45.68-(7.84+8.16)
④1.83+2.51-0.83
⑤36.75+(4.25-1.8)
⑥2.72+1.88-1.72+2.12