A.710 | B.7%米 | C.7% |
A.增加20% | B.减少20% | C.减少4% | D.不变 |
A.29 | B.31 | C.28.8 | D.29.2 |
A.75 | B.400 | C.80 | D.25 |
A.50千克 | B.40千克 | C.30千克 | D.20千克 |
A.25% | B.10% | C.15% | D.35% |
A.120÷90﹣1 | B.1﹣90÷120 | C.(120﹣90)÷90 | D.(120﹣90)÷120. |
A.0 | B.4% | C.96% |
A.70 | B.100 | C.150 | D.200 |
A.15% | B.85% | C.115% |