题目内容
脱式计算.
350÷7+24×3
(720÷8+21)×3
180×[1680÷(12+4)].
350÷7+24×3
(720÷8+21)×3
180×[1680÷(12+4)].
(1)350÷7+24×3
=50+72
=122;
(2)(720÷8+21)×3
=(90+21)×3
=111×3
=333;
(3)180×[1680÷(12+4)]
=180×[1680÷16]
=180×105
=18900.
=50+72
=122;
(2)(720÷8+21)×3
=(90+21)×3
=111×3
=333;
(3)180×[1680÷(12+4)]
=180×[1680÷16]
=180×105
=18900.
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