user-avatar
602406233564375
2 năm trước
một số tự nhiên có 2 chữ số trong đó chữ số hàng chục gấp 3 lần chữ số hàng đơn vị nếu đổi chỗ chữ số ta được một số mới có 2 chữ số nhỏ hơn số ban đầu là 18 đơn vị Tìm số đó
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

VI. Read the passage and circle T (true) or F (false). The effects of computers on children Computers have some good effects on children. Many learning software programmes help them learn vocabulary, Math, English, typing and many more. A lot of computer games help children learn foreign languages. They learn and have fun at the same time. Also, children can share their ideas with their friends on the Internet. That means they can communicate online. However, there are some bad effects of computers on them. Children probably become addicted to computer games. Most children spend too much time in front of their computer playing computer games. They don't have time for any physical activities. Another bad thing is that using computers too much is harmful to their eyes. If children do this, they may wear near-sighted glasses. 1. Children cannot learn vocabulary with learning software programmes. ……….. 2. Children can learn a foreign language with computer games. ……….. 3. Children cannot communicate on the Internet. ……….. 4. Children may wear near-sighted glasses if they don't use computers very often. ………. 5. Some learning software programmes don't help children with typing. ………… 6. Children can let their friends know their ideas online. ………… 7. Children have much time to do exercises. ………… 8. Children's eyes will get worse if they use computers too much. …………

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team