86 : 5 =
75 : 5 =
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\(\left(-67\right)+125+\left(-33\right)+75\)
\(=\left[\left(-67\right)+\left(-33\right)\right]+\left(125+75\right)\)
\(=100+200=300\)
_______
\(86.\left(-108\right)+86.9-86\)
\(=86.\left[\left(-108\right)+9-1\right]\)
\(=86.\left(-100\right)=-8600\)
_______
\(23.\left(-16\right)-23.84+300\)
\(=23.\left[\left(-16\right)-84\right]+300\)
\(=23.\left(-100\right)+300\)
\(=-2300+300\)
\(=-2000\)
______
\(235-5\left[\left(5^3-3^3\right):14\right]\)
\(=235-5\left[\left(125-27\right):14\right]\)
\(=235-5\left[98:14\right]\)
\(=235-5.7\)
\(=235-35\)
\(=200\)
_______
\(95-\left(129-74\right):5+2022^0\)
\(=95-55:5+1\)
\(=95-11+1\)
\(=84+1=85\)
\(#NqHahh\)
95 - (129 - 74) : 5 + 2022⁰
= 95 - 55 : 5 + 1
= 95 - 11 + 1
= 95 - 10
= 85
-------
(-67) + 125 + (-33) + 75
= (125 + 75) - (67 + 33)
= 200 - 100
= 100
--------
86.(-108) + 86.9 - 86
= 86.(-108 + 9 - 1)
= 86.(-100)
= 8600
1: -5>-10
=>x-5>x-10
2: -4>-8
=>x-4>x-8
3: 2>-6
=>x+2>x-6
4: -3<7
=>x-3<x+7
5: 5<8
=>x+5<x+8
6: 10>7
=>x+10>x+7
86-84+82-80+...+8-6+4-2
=2+2+2+...+2+2+2 (có tất cả 21 số 2)
=2.21
=42
77-75+73-71+...+7-5+3-1
= 2 + 2 + ... + 2 ( có 38 số 2)
= 2 . 38
= 76
tick đúng cho mình nhé !
\(a,6825=6000+800+20+5\)
\(b,33471=30000+3000+400+70+1\)
\(c,75850=70000+5000+800+50\)
\(d,86209=80000+6000+200+9\)
a) 6 825 = 6 000 + 800 + 20 + 5
b) 33 471 = 30 000 + 3 000 + 400 + 70 + 1
c) 75 850 = 70 000 + 5 000 + 800 + 50
d) 86 209 = 80 000 + 6 000 + 200 + 9
a) {132 - [116- (16 - 8)]:2}.5
= [132 - (116 - 8): 2] .5
= (132 - 108 : 2). 54
= (132 - 54).5
= 78.5 = 390
b) 36: {136 : 200 - (12+ 8. 20)]}
= 36: {336 : [200 - ( 12 + 160)]}
= 36 : [336 : ( 200 - 172)
= 36 : ( 336 : 28) = 3
c) 86 - [15. (64 - 39): 75+11]
= 86 - (15.25 : 75 + 11)
= 86 - ( 5 + 11)
= 70
d) 55 - [ 49 - ( 2 3 . 17 - 2 3 . 14 ) ]
= 55 - 49 - 2 3 . 3
= 55- ( 49 - 24)
= 30
a) {132 – [116 – (16 – 8)]:2}.5
= [132 – (116 – 8): 2] .5
= (132 – 108 : 2). 5
= (132 –54).5
= 78.5 = 390
b) 36: {136 : 200 – (12+ 8. 20)]}
= 36: {336 : [200 – ( 12 + 160)]}
= 36 : [336 : ( 200 – 172)
= 36 : ( 336 : 28)
= 36 : 12 = 3
c) 86 – [15. (64 - 39): 75+11]
= 86 – (15.25 : 75 + 11)
= 86 – ( 5 + 11)
= 70.
d) 55 – [49 – (23 . 17 – 23.14)]
= 55 – (49 – 23 .3)
= 55 – ( 49 – 24)
= 30
86 : 5 = 17 ( dư 1 )
75 : 5 = 15 nhé
86:5=17,2
75:5=15