小學(xué)四年級(jí)小數(shù)的加法和減法口算題

（1）8.73 + 1.2 =
    （2）5.51 + 6.23 =
    （3）1.05 + 3.07 =
    （4）6.99 + 7.84 =
    （5）8.41 + 5.03 =
    （6）4.75 + 4.43 =
    （7）6.69 + 6.04 =
    （8）5.34 + 6.36 =
    （9）6.52 + 2.9 =