小學(xué)四年級(jí)數(shù)學(xué)口算練習(xí)題：小數(shù)的加法和減法

2.94 - 2.66 =
    7.23 + 2.43 =
    6.15 + 5.53 =
    7.89 + 2.27 =
    5.64 - 2.05 =
    8.6 + 9.63 =
    4.23 + 1.89 =
    4.66 + 2.57 =
    9.95 + 2.24 =
    5 + 2.19 =
    5.6 - 2.6 =
    3.44 - 1.1 =
    9.4 - 6.14 =
    8.85 + 4.4 =
    9.07 - 8.21 =