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

Toán Lớp 6: Bài 1: Tính (mn nhớ tính đầy đủ các bước lm nhé) a, (-10) -21-18 b, 24- (-16) + (-15) c, 49-[ 15+(-6) ] d, (-44) – [(-14)-30] Bài 2:

Toán Lớp 6: Bài 1: Tính (mn nhớ tính đầy đủ các bước lm nhé)
a, (-10) -21-18
b, 24- (-16) + (-15)
c, 49-[ 15+(-6) ]
d, (-44) – [(-14)-30]
Bài 2:
a, 10-12-8
b, 4- (-15) -5 +6
c, 2-12-4-6
d, -45-5-(-12)+8]
Giải nhanh giúp em nhá

Comments ( 2 )

  1. $\text{1a/ (-10) – 21 – 18}$ $\\$ $\text{= (-10) + (-21) + (-18)}$ $\\$ $\text{= (-31) + (-18)}$ $\\$ $\text{= -49}$ $\\$ $\text{b/ 24 – (-16) + (-15)}$ $\\$ $\text{= 24 + 16 – 15}$ $\\$ $\text{= 40 – 15}$ $\\$ $\text{= 25}$ $\\$ $\text{c/ 49 – [15 + (-6)]}$ $\\$ $\text{= 49 – 9}$ $\\$ $\text{= 40}$ $\\$ $\text{d/ (-44) – [(-14) – 30]}$ $\\$ $\text{= -44 – (-44)}$ $\\$ $\text{= -44 + 44}$ $\\$ $\text{= 0}$ $\\$ $\text{2a/ 10 – 12 – 8}$ $\\$ $\text{= -2 – 8}$ $\\$ $\text{= -10}$ $\\$ $\text{b/ 4 – (-15) – 5 + 6}$ $\\$ $\text{= 4 + 15 – 5 + 6}$ $\\$ $\text{= 19 – 5 + 6}$ $\\$ $\text{= 14 + 6}$ $\\$ $\text{= 20}$ $\\$ $\text{c/ 2 – 12 – 4 – 6 }$ $\\$ $\text{= -10 – 4 – 6}$ $\\$ $\text{= -14 – 6}$ $\\$ $\text{= -20}$ $\\$ $\text{d/ -45 – 5 – (-12) + 8}$ $\\$ $\text{= -45 – 5 + 12 + 8}$ $\\$ $\text{= -50 + 12 + 8}$ $\\$ $\text{= -38 + 8}$ $\\$ $\text{= -30}$
     

  2. Bài 1 : 
    a, (-10)-21-18
    =-31-18
    =-49
    b, 24-(-16)+(-15)
    =40+(-15)
    =25
    c, 49-[15+(-6)]
    =49-9
    =40
    d, (-44)-[(-14)-30]
    =(-44)-(-44)
    =0
    Bài 2 :
    a, 10-12-8
    =-2-8
    =-10
    b, 4-(-15)-5+6
    =(15+5)-(4+6)
    =20-0
    =20
    c, 2-12-4-6
    =-10-4-6
    =-14-6
    =-20
    d, -45-5-(-12)+8
    =-50-(-12)+8
    =-38+8
    =-30
     

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

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