问题
解答题
240×40=2400×4．______．
答案
240×40
=（240×10）×（40÷10），
=2400×4．
故答案为：正确．
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240×40=2400×4．______．
240×40
=（240×10）×（40÷10），
=2400×4．
故答案为：正确．
| 用方框内单词的适当形式填空 | |
2. My brother enjoys _____ in winter. 3. The Greens _____ a big dinner at a restaurant yesterday. 4. Tom was tired and was soon _____. 5. You must _____ after the twins because they are too young. 6. I _____ a beautiful flower in the garden yesterday. 7. I was very _____ because I didn't have breakfast this morning. 8. My father bought a _____ watch for my mother as a birthday present. |