A.333+377 | B.900-258 | C.800-89 |
A.增加200 | B.不变 | C.增加400 |
A.280-156+44 | B.156+44 | C.280-(156+44) |
A.600米 | B.500米 | C.400米 |
A.3600 ![]() | B.4000 | C.4100 |
A.1001 | B.1000 | C.101 |
A.500×28 | B.500﹣28 | C.500+28 |
A.200 | B.600 | C.1200 |
A.245 | B.235 | C.49 | D.225 |
A.384+25 | B.348+250 | C.348+25 |