tổng 2 số lúc sau là :
425 + 5 + 5 = 435
số bé lúc sau là :
( 435 - 15 ) : 2 = 210
số bé lúc đầu là :
210 - 5 = 205
Đáp số : 205
tong cua hai so la 425 neu cung them vao moi so 5 don vi thi duoc hai so co hieu la 15 don vi vay so be la....
Tong cua 2 so la 425 . Neu cung them vao moi so 5 don vi thi duoc 2 so co hieu la 15 don vi . Tim so be
tong hai so la 425 neu cung them vao moi so 5 don vi thi duoc 2 so co hieu la 15.Tim so be
Tong cua hai so la425 neu cung them vao moi so 5 don vi thi duoc hai so co hieu la 15 don vi tim so be
tong cua hai so la 425.neu cung them vao moi so5don vi thi duoc hai so co hieu la15don vi. tim so be
hieu cua hai so la 1285 neu them vao so bi tru 538 don vi va them vao so tru 872 don vi thi hieu cua hai so moi la bao nhieu
hieu cua hai so la 1285 neu them vao so bi tru 538 don vi va them vao so bi tru 872 don vi thi hieu cua hai so moi la bao nhieu
tong cua hai so la 14238. Neu them vao so be 158 don vi thi tong moi la:
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
