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-1911-(1234-1911)
-1911-1234+1911
(-1911+1911)-1234
0 - 1234
-1234
a,-1911-(1234-1911)
=>-1911-1234+1911
=>-1234
b,32.(-39)+16.(-22)
=>16.2.(-39)+16.(-22)
=>16.(-78)+16.(-22)
=>16.(-100)
=-1600
li-----------ke nha
b.-1911-1234+1911=-1911+1911-1234=0-1234=-1234
c.-15.(29+71)=-15.100=-1500
d.156.(72+28)=156.100=15600
a) 27. ( 13 - 16 ) - 16.( 13 - 27 )
= 27.13 - 27.16 - 16.13 - 16.27
= 27.13 - 16.13
=13.( 27 - 16 )
= 13 . 11
= 143
b) -1911 - ( 1234 - 1911 )
= -1991 + ( -1234 ) + 1911
= -1234
a) 27(13-16) -16(13-27)
= 27.(-3) -16.(-14)
= (-81) -(-224)
= -81 + 244
= 143
b) -25.21+25.72+49.25
= -525 + 1800+ 1225
= 1275 + 1225
= 2500
c) -1911-(1234-1911)
= -1991 - (-677)
= -1991 + 677
= -1234
d) -1945-(567-1945)
= -1945 - (-1378)
= -1945 + 1378
= 567
1. -25.72 + 25.21 - 49.25
= 25.(-72) + 25.21 - 49.25
= 25.(-72 + 21 - 49)
= 25. (-100)
= -2500
2. 35(14 - 23) - 23(14 - 35)
= 35. (-9) - 23. (-9)
= -9(35 - 23)
= -9. 12
= -108
3. 8154 -(674 + 8154) + (-98 + 674)
= 8154 - 674 - 8154 + (-98) + 674
= 8154 - 8154 - 674 + 674 + (-98)
= -98
4. 25.21 + 25.72 + 49.25
= 25(21 + 72 + 49)
= 25. 142
= 3550
5. 27(13 - 16) - 16(13 - 27)
= (27.13 - 27.16) - (16.13 - 16.27)
= 27.13 - 27.16 - 16.13 - 16.27
= 27.13 - 16.13 - 27.16 - 16.27
= 27.13 - 16.13
= 13(27 - 16)
= 13.11
= 143
6. -1911 -(1234 - 1911)
= -1911 - 1234 + 1911
= -1911 + 1911 - 1234
= -1234
1) -1911 -( 1234 -1911)
= -1911 - 1234 + 1911 = -1234
2) 156.72+ 28. 156
= 156.(72+28)
= 156. 100
= 15600
3)32. (-39) + 16.(-22)
= 16.2.(-39) + 16.(-22)
= 16. (-78) + 16.(-22)
= 16.[(-78) + (-22)]
= 16. (-100)
= -1600
4) -1954 - (567 - 1954)
= -1954 - 567 + 1954
= -567
5)184. 33 + 67. 184
= 184.(33+ 67)
= 184. 100
= 18400
6) 44. (-36) + 22. (-28)
= 22.2.(-36) + 22.(-28)
= 22.(-72) + 22.(-28)
= 22. [(-72)+ (-28)]
= 22. (-100)
= -2200
1) -1911 - (1234 - 1911)
= -1911 - 1234 + 1911
= (-1911 + 1911 ) + 1234
= 0 + 1234
= 1234
2) 156 . 72 + 28 . 156
= 156 . ( 72 + 28 )
= 156 . 100
= 15600
3) 32 . (-39) + 16 . (-22)
= [ 32 . (-39) ] + [ 16 . (-22) ]
= -1248 + (-352)
= - 1600
4) -1954 - (567 - 1954)
= -1954 - 567 + 1954
= (-1954 + 1954) + 567
= 0 + 567
= 567
5) 184 . 33 + 67 . 184
= 184 . (33 + 67)
= 184 . 100
= 18400
6) 44 . ( -36) + 22 . (-28)
= [ 44 . (-36) ] + [ 22 . (-28) ]
= -1584 + (-616)
= -2200
-1911-(1234-1911)= -1234
-1911-(1234-1911)
= -1911-1234+1911
= [(-1911)+1911]-1234
= 0-1234
=-1234