300+600+100+1000

=900+100+1000

=1000+1000

=2000

bạn tk mình ha, nình sẽ tk lại.

The Battle of Rach Gam - Xoai Mout was a great battle on the river that took place on the night of January 19 to 20, 1785 between the Siamese-Nguyen coalition and the Tay Son army at the Rach Gam-Xoai Mut river section, then belonging to the Tran Dinh palace, of Dang Trong; later changed to My Tho province, now in Tien Giang province, Vietnam. Write 200 words to think about the cause of victory and the historical significance of this victory.

The COVID-19 pandemic caused by the SARS-CoV-2 virus had the first confirmed case in Vietnam on January 23, 2020. Quarantine measures, monitoring and limiting people out of the area translation, border closure, medical declaration. Some activities "gather a large number of people", travel and trade in localities are still limited. Some places measure the temperature, equip disinfectants, give out free masks and tighten controls. Socio-economic situation is affected by the pandemic. Write about 200 words to say what you think about the cause and prevention of this disease.

x = 10

k mình nha

1. Ta đã biết cách nhân hai số tự nhiên. Vì số dương cũng là số tự nhiên nên cách nhân hai số dương chính là cách nhân hai số tự nhiên.

2. Quy tắc nhân hai số âm.

Muốn nhân hai số nguyên âm, ta nhân hai giá trị tuyệt đối của chúng.