1. -1911-(1234-1911)
2. 156.72+28.156
3. 32.(-39)+16.(-22)
4. -1945-(567-1945)
5. 184.33+67.184
6. 44.(-36)+22.(-28)
1. -1911-(1234-1911)
2. 156.72+28.156
3. 32.(-39)+16.(-22)
4. -1945-(567-1945)
5. 184.33+67.184
6. 44.(-36)+22.(-28)
`-1911-(1234-1911)`
`= -1911-1234+1911`
`=(-1911+1911)-1234`
`=0-1234`
`=-1234`
___________________
`156.72+28.156`
`=156.(72+28)`
`=156.100`
`=15600`
__________________
`32 . ( -39 ) + 16 . ( -22 )`
`= 32 . ( -39 ) + 16 . 2 . ( -11 )`
`= 32 . ( -39 ) + 32 . ( -11 `
`= 32 . [ ( -39 ) + ( -11 ) ]`
`= 32 . ( -50 )`
`= -1600`
__________________
`-1945-(567-1945)`
`=-1945-567+1945`
`=-567`
_________________
`184.33+67.184`
`=184.(33+67)`
`=184.100`
`=18400`
________________
`44 . (-36)+ 22 .( -28)`
`= 22 . 2 . (-36) + 22 .( -28 )`
`= 22 . [2 . (-36 )] + 22 . (-28)`
`= 22 .( -72) + 22 . (-28)`
`= 22 . [( -72 )+ (-28 )]`
`= 22 . -100`
`= – 2200 `
Đáp án:
`-1911-(1234-1911)`
`= -1911 – 1234 + 1911`
`= -1911 + 1911 -1234`
`= -1234`
`156.72+28.156`
`= 156 .(72 + 28)`
`= 156 . 100`
`= 15600`
`32.(-39)+16.(-22)`
`=(32 – 22 ). ( -39 + 16)`
`=10 .(-23)`
`= -230`
` -1945-(567-1945)`
`= -1945-567+1945`
`= -1945+1945 -567`
`= -567`
`184.33+67.184`
`= 184( 67+ 33)`
`= 184 .100`
`= 18400`
`44.(-36)+22.(-28)`
`= 22.2 (-36) + 22(-28)
`= 22.-72 + 22(-28)`
`= 22(-72 -28)`
`= 22. (-100)`
`= -2200`
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