
计算下面各题 350÷7+24×3 618-80÷2×5 243+65+(57+135) 15×(41-17)÷30 45÷[210
计算下面各题350÷7+24×3618-80÷2×5243+65+(57+135)15×(41-17)÷3045÷[210÷(35×2)]25×(9×4)×3....
计算下面各题 350÷7+24×3 618-80÷2×5 243+65+(57+135) 15×(41-17)÷30 45÷[210÷(35×2)] 25×(9×4)×3.
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(1)350÷7+24×3,
=50+72,
=122;
(2)618-80÷2×5,
=618-40×5,
=618-200,
=418;
(3)243+65+(57+135),
=(243+57)+(65+135),
=300+200,
=500;
(4)15×(41-17)÷30,
=15×24÷30,
=360÷30,
=12;
(5)45÷[210÷(35×2)],
=45÷[210÷70],
=45÷3,
=15;
(6)25×(9×4)×3,
=(25×4)×(9×3),
=100×27,
=2700.
=50+72,
=122;
(2)618-80÷2×5,
=618-40×5,
=618-200,
=418;
(3)243+65+(57+135),
=(243+57)+(65+135),
=300+200,
=500;
(4)15×(41-17)÷30,
=15×24÷30,
=360÷30,
=12;
(5)45÷[210÷(35×2)],
=45÷[210÷70],
=45÷3,
=15;
(6)25×(9×4)×3,
=(25×4)×(9×3),
=100×27,
=2700.
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