306 - [(180. 4 𝑜 - 160) : 2 2 - 9] : (-2)
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easy
a) {6000 :[219-(25-6)]}: 15 -2
{6000 : [ 219- 19]} : 15 -2
{6000 :200 } : 15 -2
30 : 15 -2
2-2=0
b) 407-{[(180-160):4+9]:2}
407-{[20:4+9]:2}
407-{14:2}
407-7=400
c)4.15.17+5.12.27+6.10.56
1020+1620+3360
=6000
nhớ k mình nha
a.(6000:200):15-2
30-15-2=0
b.407-[(5+9):2]
407-7
400
c.60*17+60*27+60*56
60*(17+27+56)
6000
a: \(=47-\left[\left(45\cdot16-25\cdot12\right):14\right]\)
\(=47-30=17\)
b: \(=50-\left[6+34\right]\)
=50-40
=10
Cau a la ban hay tinh trong dau ngoac don truoc sau do lam nhoac vuong va lam dau ngoac nhon va tinh cac phep tinh con lai
160 : { 180 - [ 36 - ( 22 . 16 - 22 . 12 )]}
= 160 : { 180 - [ 36 - 22 . ( 16 - 12 )]}
= 160 : { 180 - [ 36 - 22 . 4 ]}
= 160 : { 180 - [ 36 - 4 . 4 ]}
= 160 : { 180 - [ 36 - 16 ]}
= 160 : { 180 - 20 }
= 160 : 160
= 1
160:{180-[36-(22.16-22.12)]}
=160:{180-[36-(4.16-4.12)]}
=160:{180-(36-16)}
=160:{180-20}
=160:160
=1
tk mk nha
=1
\(a.2345-1000:\left[19-2\left(21-18\right)^2\right]\)
\(=2345-1000:\left[19-2\left(3\right)^2\right]\)
\(=2345-1000:\left[19-2.9\right]\)
\(=2345-1000:\left[19-18\right]\)
\(=2345-1000:1\)
\(=2345-1000\)
\(=1345\)
a) 2345 – 1000 : [19 – 2(21 – 18)2]
= 2345 – 1000 : [19 – 2(3)2 ]
= 2345 – 1000 : [19 – 2 . 9 ]
= 2345 – 1000 : [19 – 18]
= 2345 – 1000 : 1
= 2345 – 1000
= 1345
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