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hieu hai so la 6,9tim hai so do biet rang neu them vao so be 2,5 don vi va bot o so lon di1,2 don vi thi duoc hai so co tong la 79,8
Bai 1 : Tong cua hai so la 2000. Neu so hang thu nhat them 135 don vi va so hang thu hai bot 531 don vi thi duoc tong moi la bao nhieu?Bai 2 : Tim tong hai so biet rang neu so hang thu nhat bot di 246 don vi va so hang thu hai them 642 don vi thi duoc tong moi bang 2010.Bai 3 : Hieu cua hai so la 1000. Neu so lon them 235 don vi va so be bot 200 don vi thi duoc hieu moi la bao nhieu?Bai 4 : Hieu cua hai so bang 1234. Neu so lon bot 234 don vi va so be them 456 don vi thi duoc hieu moi la bao nh...
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Bai 1 : Tong cua hai so la 2000. Neu so hang thu nhat them 135 don vi va so hang thu hai bot 531 don vi thi duoc tong moi la bao nhieu?
Bai 2 : Tim tong hai so biet rang neu so hang thu nhat bot di 246 don vi va so hang thu hai them 642 don vi thi duoc tong moi bang 2010.
Bai 3 : Hieu cua hai so la 1000. Neu so lon them 235 don vi va so be bot 200 don vi thi duoc hieu moi la bao nhieu?
Bai 4 : Hieu cua hai so bang 1234. Neu so lon bot 234 don vi va so be them 456 don vi thi duoc hieu moi la bao nhieu?
Bai 5 ; Tim hieu cua hai so, biet rang so lon va so be cung bot di 100 don vi thi duoc hieu moi la 1000.
Tong cua 2 so la: 9175. Sau khi them vao so lon 113 don vi va bot o so be 96 don vi thi duoc hai so moi co hieu la 348.Tim hai so do.
tim 2 so co tong cua chung la 257 va neu them vao so lon 13 don vi, so be 9 don vi thi duoc hai so co ty la 1,25
cho 2 so co tong bang 702 biet neu them vao so be 11 don vi va so lon 15 don vi thi duoc 2 so moi co ti so la 2,25 tim so lon
Tong cua 2 so la 14. Neu them vao so lon 1,3don vi va bot o so be di 1,3 don vi thi so be bang 2/3so lon .Tim 2 so
hai so co tong la 187 . neu bot so be di 12 don vi thi so duoc so moi bang 2/3 so lon . tim so lon
hai so thap phan co tong bang 88.8 . neu them vao so thu nhat 5.4 don vi va bot di o so thu hai la 7 don vi duoc thi so thu nhat se gap 4 lan so thu hai
hai so co tong bang 380 . Neu bot so be di 25 don vi thi se duoc so moi bang 2/3 so lon . So be la ?