A.6.67-3.67+0.49 |
B.6.67+(0.47-3.67) |
A.80.41-25.41-(6.28+3.72) | B.80.41-25.41-6.28-3.72 |
A.15.73-6.25-3.73 | B.15.73-3.73-6.25 |
A.5.84+0.78+4.16="5.84+4.16" +0.78 |
B.5.84+0.78+4.16=0.78+(5.84 +4.16) |
C.5.84+0.78+4.16=5.84+(0.78 +4.16) |
A.乘法结合律 | B.加法交换律 | C.加法结合律 |
A.交换律 | B.结合律 | C.交换律和结合律 |
A.327-(2.63+0.37) | B.327-0.37-2.63 |
A.6.67-3.67+0.49 | B.6.67+(0.47-3.67) |
A.80.56-25.56-(9.28+3.72) | B.80.56-25.56-9.28-3.72 |
A.加法交换律 | B.加法结合律 | C.加法交换律和加法结合律 |