Các câu hỏi tương tự
Hieu 2 so la 18.Neu them 6 don vi vao so lon va giu nghuyen so be thi ti so cua hai so la3/5.Tim 2 so do
tong cua hai so la 25750.neu them so be 125 don vi va giam so lon 90 don vi thi so be bang 2/3 so lon tim hai so do
Tong cua hai so la 3459 neu tang so thu nhat len 36 don vi va giam so thu hai 85 don vi thi so thu nhat hon so thu hai 262 tim so lon so be
bai 1a} mot phep chia co so chia la 49 so du la 38. hoiphai 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 vico 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 vib} tim SBC va SC cua mot phep chia biet SBC gap 11 lan thuong va thuong bang 5 lan SCc} hieu hai so la 60 neu ta cong them 18 don vi vao moi so thi so lon gap 3 l...
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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
tim tong cua hai so biet neu tang so lon len 735 don vi va giam o so be di357 don vi thi duoc tong moi la 2005
tong cua 2 so la 84. neu so be giam 7 don vi va giu nguyen so lon thi so be = 3/4 so lon . tim so be ban dau .
tong cua hai so la 25750.neu them so be 125 don vi va giam so lon 90 don vi thi so be bang 2/3 so lon tim hai so do .nho viet loi giai ra ro rang nhe cac ban
trung binh cong cua 2 so la 6482.Tim 2so do biet neu tang so thu 1 them 246 don vi thi duoc so thu 2.Tim so thu 2
tim hieu cua hai so biet rang neu tang so bi tru them123 don vi va giam so tru di 456 don vi thi duoc hieu moi la 7890