tinh nhanh a( 2400 +1200 ) :12 b (1800-3000:60 c 305+95 d 36.14+36.86 e 35.35+25.74=25

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tinh nhanh a( 2400 +1200 ) :12 b (1800-3000:60 c 305+95 d 36.14+36.86 e 35.35+25.74=25

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Delilah 2 tháng 2021-08-16T16:36:33+00:00 2 Answers 3 views 0

Answers ( )

    0
    2021-08-16T16:37:35+00:00

    Đáp án:

    a) ( 2400 +1200 ) :12

    =2400:12+1200:12

    =200+1000

    =1200

    b) (1800-3000):60

    =1800:60-3000:60

    =30-50

    =-20

    c) 305+95

    =300+100

    =400

    d) 36.14+36.86

    =36.(14+86)

    =36.100

    =3600

     

    Giải thích các bước giải:

     

    0
    2021-08-16T16:37:59+00:00

    a/ ( 2400 +1200 ) :12

    =2400:12+1200:12

    =200+1000

    =1200

    b/ (1800-3000):60

    =1800:60-3000:60

    =30-50

    =-20

    c/ 305+95

    =300+100

    =400

    d/ 36.14+36.86

    =36.(14+86)

    =36.100

    =3600

     

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