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.

bai 1

a} mot phep chia co so chia la 49 so du la 38. hoi

phai them vao so bi chia it nhat la bao nhieu de thuong tang the 1 don vi ?

co the them vao sbc nhieu nhat la bao nhieu de thuong tang 1 don vi 2 don vi

co the giam so bi chia it nhat bao nhieu don vi de thuong giam 1 don vi 

giam sbc nhieu nhat bao nhieu don vi de thuong giam 1 don vi

b} tim SBC va SC cua mot phep chia biet SBC gap 11 lan thuong va thuong bang 5 lan SC

c} hieu hai so la 60 neu ta cong them 18 don vi vao moi so thi so lon gap 3 lan so be em hay tim hai so do

d} tich hai so la 645. neu ta them 5 don vi vao so thu hai thi tich moi la 860 tim hai so do

bai 2 

a} mot khu vuon hinh chu nhat chieu dai hon chieu rong 40m neu mo rong them moi ben 10m thi chieu dai gap doi chieu rong tinh dien tich khu vuon

b} hieu cua hai so la 140 neu ta tang so bi tru len 5 lan va giu nguyen so tru thi hieu moi la 1454 tim 2 so do 

  giai tat nhe ban nao giai thanh bai giai ma giai tat thi min se tich cho tat ca ban do 

dung quen ket ban voi minh nha 

minh dang can gap mong cac ban giup cho