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Tim tong 2 so, biet rang neu so hang thu nhat them 1,23 va so hang thu hai bot 4,56 thi duoc 7,89 [ Mn giup mik voi nha ]
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 ba so bang 20,09 neu so hang thu nhat tang them 1,01 so hang thu hai tang them 2,09 va so hang thu ba tang them 3 don vi thi duoc tong moi la bao nhieu
tim hai so co tong bang 140 , biet rang neu gap so hang thu nhat len 5 lan va gap so hang thu hai len 3 lan thi tong moi la 508
mot con trau an het mot bo co trong 16 phut . Nhung trau moi an duoc 4 phut thi co them mot con be an mot minh thi sau bao nhieu lau se het co ?
lai suat tiet kiem cua ngan hang la 0,5% mot thang. Hoi neu mot nguoi gui so tien 10 trieu dong thi sau 3 thang ca tien goc va lai la bao nhieu ?
tim hai so biet so thu nhat bang 2/3 so thu hai. Biet rang neu bot o so thu nhat di 13 don vi thi duoc tong moi la 123 ?
ai lam nhanh 3 bai se duoc tick an na
tong cua 2 so la 19,1.Neu giam so hang thu nhat di 4 lan va giu nguyen so hang thu hai thi duoc tong moi la 7,4.Tim hai so do?
tong cua 2 so bang 7,9 tim hai sso do biet rang 3 lan so hang thu nhat cong voi so hang thu hai thi duoc 13,3
tong cua hai so la 19,1.neu giam so hang thu nhat di 4 lan va giu nguyen so hang thu hai thi duoc tong moi la 7,4 .tim hai so do
tim 1 phep cong 2 phan so thap phan biet rang neu so hang thu nhat them 2.001 don vi tong la 223.221 con tang so hang thu hai len 2 lan thi tong la 241.32