a, 17,58-6,35-5.65=17,58-(6,35+5.65)=17,58-12=5,58
b, 513,76-62,8+49,04
=(513,76+49,04)-62,8
=562,8-62,8=500
k cho mình nha bạn!
a; 17,58-6,35-5,65=17,58-(6,35+5,65)=17,58-12=5,58
b;513,76-62,8+49,04=513,76+49,04-62,8=562,8-62,8=500
a) 17,58 - 6,35 - 5,65 = 17,58 - ( 6,35 + 5,65 )
= 17,58 - 12
= 5,58
b) 513,76 - 62,8 + 49,04 = ( 513,76 + 49,04 ) - 62,8
= 562,8 - 62,8
= 500
a)17,58-6,35-5,65
=17,58-(6,35-5,65)
=17,58-0,6
=16,98
b)513,76-62,8+49,04
=(513,76+49,04)-63,8
=562,8-63,8
=500
TL:
a) 17,58 - 6,35 - 5,65
= 17,58 - ( 6,35 + 5,65 )
= 17,58 - 12
= 5,58
b) 513,76 - 62,8 + 49,04
= ( 513,76 + 49,04 ) - 62,8
= 562,8 - 62,8
= 500
HT.
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Học tốt!:)