• 2022-06-06
    将7—5.2=1.8,1.8×3=5.4,5.4+2.2=7.6,7.6×4=30.4这四个分步算式列成综合算式是()
    A: (7-5.2)×3+2.2÷4
    B: 7-5.2×3+2.2÷4
    C: (7-5.2×3+2.2)÷4
    D: [(7-5.2)×3+2.2]×4