A.54.8 | B.57.8 | C.58.8 |
A.4 | B.13.7 | C.0.44 | D.26 |
A.5.72-1.36-0.52 | B.5.72-1.36+0.52 | C.5.72-(1.36+0.52) |
A.加法交换律 | B.加法结合律 | C.加法交换律和加法结合律 |
A.14.9-4.9+3.5 | B.14.9-3.5+4.9 | C.14.9-4.9-3.5 |
A.0.2 | B.0.02 | C.0.9 |
A.0 | B.15.2 | C.7.6 |
A.26.5 | B.27.5 | C.28.5 |
A.14.9-4.9+3.5 | B.14.9-3.5+4.9 | C.14.9-4.9-3.5 |
A.100+55.5-34.3 |
B.100+34.3-55.5 |
C.100-(55.5+34.3) |
D.100-(55.5-34.3) |