tham nao la tieng anh lop 1 nen de lam

bai nay de lam ban oi

tui lam xong roi nhe

minh cung khong biet cho lam

nhan chia truoc cong tru sau ma ban nguyen le phuoc thinh

72,2x54,32+44,68x72,7+72,7

=(72,7 x 54,32 )+44,68

=3949,064+44,68

=3993,744

 a, 8,4 : 4 - 1,56

=(8,4 : 4)-1,56

=2,1 - 1,56

=0,54

b, 8,46 : 9 + 20,13

=( 8,46 : 9 ) + 20,13

=0,94 + 20,13

=21,07

co cau roi nhung khong co tu in dam

tu in dam dau ban