问题 解答题
估算.
209÷69≈
540÷59≈633÷92≈
324÷41≈243÷38≈253÷50≈
答案

(1)209÷69,

≈210÷70,

=3;

(2)540÷59,

≈540÷60,

=9;

(3)633÷92,

≈630÷90,

=7;

(4)324÷41,

≈320÷40,

=8;

(5)243÷38,

≈240÷40,

=6;

(6)253÷50,

≈250÷50,

=5.

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