Toán Lớp 6: A) 1560:[5.79-(125+5.49)+5.21]
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Toán Lớp 6: A) 1560:[5.79-(125+5.49)+5.21]
Comments ( 2 )
1560:[5.79-(125+5.49)+5.21]
=1560:[395-(125+245)+105]
=1560:[395-370+105]
=1560:[25+105]
=1560:130
=12
Chúc bạn học tốt.
Lời giải và giải thích chi tiết:
A) 1560 :[5.79 – (125 + 5.49 )+ 5.21]
= 1560 :[5.79 – (125 +245)+ 5.21]
= 1560 :[5.79 – 370 + 5.21]
= 1560 :[ 5. ( 79 + 21) – 370 ]
= 1560 : [ 5. 100 -370]
= 1560 : [ 500 -370]
= 1560 : 130
=12