a Voi 32700 -(a+b) = 32700 - (871+829)=31000

b Voi ( m+ n) x p = (2071 +5929) x4 = 32000

a 248943294 + 60148320= 309091614

b 34506728 - 8243809 = 26262919

c 23729 x 2 = 47458

d 17423 : 3 = 5807

1 =

2 <
3 <
4 <

A, chu so 5 la hang chuc nghin co gia tri la 50000

B lam tron so den hang tram nghin la so 1100000

1: it is 9:20

1: it is 9:20

2: there are two boys 

3: yes they can 

4: she play the piano
5: she want to eat grapes

1: it is in december

2: no i can't

3: it is on saturday

4: i ride a bike

5: i go to bed at 9 o'clock

1: i want to some jam

2: it is in april

3: it is on thursday

4: i play chess on mondays

1: It is ten twenty five 

2: yes she can 

3: he's from America

4: I listen to music