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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: Bài 1 : tính a, 123 + 132 + 321 + 312 b, 367 + 129 + 133 + 371 + 17 c, 652 + 327 + 148 + 15 + 73 d, 37.64 + 37.36 e, 4.7.76 + 28.24 f

Toán Lớp 6: Bài 1 : tính
a, 123 + 132 + 321 + 312
b, 367 + 129 + 133 + 371 + 17
c, 652 + 327 + 148 + 15 + 73
d, 37.64 + 37.36
e, 4.7.76 + 28.24
f, 136.48 + 16.272 + 68.20.2

Comments ( 2 )

  1. a)123+132+321+312
    = 888
    b)367+129+133+371+17
    = (367+133)+(129+371)+17
    = 500+500+17
    = 1017
    c)652+327+148+15+73
    = (652+148)+(327+73)+15
    = 800+400+15
    = 1215
    d)37.64+37.36
    = 37.(64+36)
    = 37.100
    = 3700
    e)4.7.76+28.24
    = 28.76+28.24
    = 28.(76+24)
    = 28×100
    = 2800
    f)136.48+16.272+68.20.2
    = 6528+4352+2720
    = 13600

  2. Lời giải và giải thích chi tiết:
    $\text{a, 123+132+321+312}$
    $\text{= 255+321+312}$
    $\text{= 576+312}$
    $\text{= 888}$
    $\text{b, 367+129+133+371+17}$
    $\text{= (367+133)+(129+371)+17}$
    $\text{= 500+500+17}$
    $\text{= 1017}$
    $\text{c, 652+327+148+15+73}$
    $\text{= (652+148)+(327+73)+15}$
    $\text{= 800+400+15}$
    $\text{= 1215}$
    $\text{d, 37×64+37×36}$
    $\text{= 37×(64+36)}$
    $\text{= 37×100}$
    $\text{= 3700}$
    $\text{e, 4×7×76+28×24}$
    $\text{= 28×76+28×24}$
    $\text{= 28×(76+24)}$
    $\text{= 28×100}$
    $\text{= 2800}$
    $\text{f, 136×48+16×272+68×20×2}$
    $\text{= 6528+4352+2720}$
    $\text{= 10880+2720}$
    $\text{= 13600}$

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222-9+11+12:2*14+14 = ? ( )

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