一千万以内的数

解决涉及读、写、排序、比较、四舍五入以及负数（最大到10,000,000）的数字和实际问题。

Solve number and practical problems involving reading, writing, ordering, comparing, rounding, and negative numbers up to 10,000,000

学习证据 / Evidence

• 某国人口为8,274,500——四舍五入到百万位，以便用于新闻标题。
• 将三个海沟以米为单位的深度（包括负值）按顺序排列。
• 通过将三个活动的出席人数分别四舍五入到最接近的100,000，估算总出席人数。

• A country's population is 8,274,500 — round to the nearest million for a headline
• Order the depths of three ocean trenches given in metres including negative values
• Estimate the total attendance at three events by rounding each to the nearest 100,000

评估问题 / Assessment

如果{{name}}读到地球到月球的距离约为384,400千米，能把它四舍五入到最接近的10,000千米，并判断它更接近380,000还是390,000吗？

If {{name}} reads that the distance to the Moon is about 384,400 km, can they round it to the nearest 10,000 km and say whether it's closer to 380,000 or 390,000?