132+32 434+655 445-4
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a.-168+79-132=-89-132=-221
b.-32.47+(-32).53=(-32)(47+53)=(-32).100=(-3200)
c.-575+70-445=-505-445=-950
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32 . (132 - 247) - 132 . (32 - 247)
= 32 . 132 - 32 . 247 - 132 . 32 + 132 . 247
= (32 . 132 - 132 . 32) + (132 . 247 - 32 . 247)
= [32 . (132 - 132)] + (132 . 247 - 32 . 247)
= [32 . 0] + (132 . 247 - 32 . 247)
= 0 + [247 . (132 - 32)]
= 0 + [247 . 100]
= 0 + 24700
= 24700
32 . (132 - 247) - 132 . (32 - 247)
= 32. 132 -32.247 - (132.32 -132.247)
= 32. 132 -32.247 - 132.32 +132.247
=(32. 132 -132.32 ) + (132.247 - 32.247)
= 0 + 247.(132-32)
=247.100
=24700
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Ta có: n = 32.132-32.247-132.32+132.247
= 32.132-132.32-32.247+132.247
= 0+247(132-32)
= 247.100
= 24700
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A : 196 x 56 + 196 x 41 + 4 x 196 - 196 x 1
= 196 x ( 56 + 41 + 4 - 1 )
= 196 x 100
= 19 600
B : 132 x 19 + 132 x 18 + 64 x 132 - 132 x 1
= 132 x ( 19 + 18 + 64 - 1 )
= 132 x 100
= 13 200
C : 145 x 69 + 145 x 32 - 145 x 1
= 145 x ( 69 + 32 - 1 )
= 145 x 100
= 14 500
A = 196 x 56 + 196 x 41 + 4 x 196 - 196
A = 196 x ( 56 + 41 + 4 - 1 )
A = 196 x 100 = 19600
B = 132 x 19 + 132 x 18 + 64 x 132 - 132
B = 132 x ( 19 + 18 + 64 - 1 )
B = 132 x 100 = 13200
C = 145 x 69 + 145 x 32 - 145
C = 145 x ( 69 + 32 - 1 )
C = 145 x 100 = 14500
132+32=164
434+655=1089
445-4=441 nha
132+32 434+655 445-4=688 007.