Question

bai 1: Thuc hien phep tinh

a) 75/100 + 18/21 + 19/32 + 1/4 + 3/21 + 13/32

b) 22/5 + 51/9 + 11/4 + 3/5 + 1/3 + 1/4

 

Answer 1

1a

75/100+18/21+19/32+1/4+3/21+13/32

= 3/4 +6/7+19/32+1/4+1/7+13/32

= (3/4+1/4)+(19/32+13/32)+(6/7+1/7)

= 1+1+1=3

Answer 2

1b

22/5+51/9+11/4+3/5+1/3+1/4

=22/5+17/3+11/4+3/5+1/3+1/4

=(22/5+3/5)+(17/3+1/3)+(11/4+1/4)

=25/5+18/3+12/4

=5+6+3

=14

Answer 3

toi khong