谁会这道题:脱式计算.(能简算的

1个回答

  • (1)0.36+0.545+0.45

    =0.905+0.45

    =1.355 (2)8.3-0.46-1.237

    =7.84-1.237

    =6.603

    (3)23.4-5.85-4.15

    =23.4-(5.85+4.15)

    =23.4-10

    =13.4 (4)39.7+ 20.43+ 0.3+ 9.57

    =(39.7+0.3)+(20.43+9.57)

    =40+30

    =70

    (5)14.52-(4.52+7.88)

    =14.52-12.4

    =2.12

    (6)15.28 +28.99+ 20.72

    =(15.28+20.72)+28.99

    =36+28.99

    =64.99