khi cộng 2 so thap phan 1 ban hoc sinh viet nham dau phay cua so hang thu nhat sang ben phai 1 hang nen duoc ket qua 30,25 . tim 2 so do , biet tong cua chung la 19,09

khi cong 2 so thap phan , 1 ban viet nham dau phay cua so haNG THU NHAT SANG BEN PHAI  1 hang nen duoc ket qua la 30,25 tim 2 so do biet tong cua chung = 19,09 

khi cong hai so thap phan, mot ban hoc sinh viet nham dau phay cua so hang thu nhat sang ben phai mot hang nen duoc ket qua la 30.25. tim hai so do , biet tong dung la 19.09

khi cong 2 so thap phan, mot ban hoc sinh viet nham dau phay sang 1 hang nen tong la 30,25.tim 2 so biet tong dung là 19,09

khi cong mot so tu nhien voi mot so thap phan mot ban hoc sinh viet nham dau phay lui sang phai mot hang nen ket qua tim duoc la 87,87. tìm so thap phan do biet tong cua chung la 51,98

Khi cong 1 so tu nhien voi 1 so thap phan mot hoc sinh so y viet nhan dau phay cua so thap phan sang ben phai 1 hang nen tim duoc tong sai la 591,4 . Tim so thap phan do , biet tong dung = 480,34.

Khi cong 1 so tu nhien voi 1 so thap phan mot hoc sinh so y viet nhan dau phay cua so thap phan sang ben phai 1 hang nen tim duoc tong sai la 591,4 . Tim so thap phan do , biet tong dung = 480,34.

khi cong mot so tu nhien voi mot so thap phan mot hoc sinh so y viet nha,m dau phay cua so thap phan sang ben phai mot hang nen tim duoc tong sai la 591.4 tim so thap phan do biet tong dung bang 480.34

khi cong 2 so thap phan .1 ban viet nham cua so hang thu nhat sang ben phai 1 hang nen duoc ket qua la 30.25 . tim 2 so do biet tong dung la 19.09