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THAM KHẢO:
I'd like to visit Cuc Phuong National Park most due to the following reasons. First, it is in our country. Therefore it is easy and not so expensive for us to go there. Next, it is said to be old, so we can find a one-thousand-year-old tree and a large variety of rainforest. Moreover, tourists can study butterflies, visit caves and hike mountains. Finally, we can see the work being done to protect threatened and endangered species.

lớp 5a đã trồng được số cây là:

180 x 45%= 81 ( cây )

theo dự định, lớp 5a còn phải trồng số cây là:

180-81= 99 (cây)

đ/s: 99 cây

đúng 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%

Số bé là: (1385 - 247) : 2 =569

Số lớn là: 1385 - 569 = 816

Gọi 2 số cần tìm là a và b(đk....)

Thương của a và b=0,25=1/4

Ta có sơ đồ :
b !----!----!----!----!

a !----!

a=0,75:5=........

b=0,75-a

11111111 x 11=122222221

2*2=4

Nha bạn

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