题目内容
估算
| 359÷6≈ | 181÷2≈ | 138÷7≈ | 323÷4≈ |
(1)359÷6,
≈360÷6,
=60;
(2)181÷2,
≈180÷2,
=90;
(3)138÷7,
≈140÷7,
=20;
(4)323÷4,
≈320÷4,
=80.
≈360÷6,
=60;
(2)181÷2,
≈180÷2,
=90;
(3)138÷7,
≈140÷7,
=20;
(4)323÷4,
≈320÷4,
=80.
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