A.330 | B.130 | C.230 |
A.432+225+75 | B.432-(225+75) | C.432-(225-75) |
A.165+156=321 | B.321-165=156 |
C.321-156=165 | D.321+100+50+6 |
A.比正确结果少1 | B.比正确结果多1 |
C.比正确结果少2 | D.比正确结果多2 |
A.200 | B.201 | C.202 |
A.7 | B.10 | C.4 |
A.45 | B.165 | C.35 |
A.350-126+207 | B.126+207 | C.350-(126+207) |
A.500-(319-172) | B.500-319-172 | C.319+172 |
A.5 | B.7 | C.9 |