=(23+17)+(12+28)−30=40+40−30=50

nhớ tick đúng cho mik nhó

Số đó là/: 

89 + 15 = 104 

Đáp số/: 104

tick đúng cho mik iiiiiiii<3

Bình có số hòn bi là:

5 + 4 = 9 ( hòn bi )

Căn có số hòn bi là:

9 + 3 = 11 ( hòn bi )

2+5+20510=20517

50 dm=500 cm

2. My salary is high, but yours is higher.

My salary isn't as high as yours

3. You know a bit about cars, but I know more.

You don't know as much about cars as me

4. It's still cold, but it was colder yesterday.

It isn't as cold as yesterday

5. I still feel quite tired I felt, but a lot more tired yesterday.

I don't feel as tired as yesterday

6. Our neighbours have lived here for quite a long time, but we've lived here longer.

Our neighbours haven't lived as long as us

27 + 1 + 2010 = 2038

27 . (1 + 2010) = 54297

2010 - ( 27 . 1) = 1983

ủa alo

đây là lớp 1 hả?????

1+1=2

2+5-3=4