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tim 2 so thap phan la 21,66 va 3,34 . tim 1 so biet neu lay so lon tru di so do va so do thi ta dươc 2 so co ti số là 4
hai so thap phan co tong la 38,18. Neu ta doi dau phay cua so lon sang ben phai mot hang va giu nguyen so be thi tong cua hai so thap phan luc do la 269,93 . Tim hai so thap phan do
cho 2 so thap phan 17.2 va 56.2. tim so a biet rang neu lay cac so da cho tru di a ta duoc 2 so moi ma so lon gap 4 lan so be
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cho hai so thap phan 17,2 va 56,2.Tim so A biet rang neu lay cac so da cho tru di A ta duoc hai so moi ma so lon gap 4 lan so be
cho 1 so co 2 chu so va 1 so co 3 chu so .ti so cua 2 so do la 3/7.Tim 2 so do,biet rang neu viet them chu so 1 va ben phai so be thi duoc so lon
cho 2 so thap phan a va b neu viet them 3,01 vao so a va bot o so b di 3,01 thi duoc 2 so moi co ti so la 4 con neu bot di o a 0,7 va them vao b 0,7 thi ta duoc 2 so moi co ti so la 3 tim hai so a va b
bai 1 : Tim hieu cua hai so, biet rang so lon them 735 don vi va so ben them 449 don vi thi duoc hieu moi la 2000.Bai 2 : Khi thuc hien phep tru hai so, mot ban da so y viet sai nhu sau : o so bi tru co hai chu socuoi cung la 35 da viet thanh 53 nen phep tru sai co ket qua la 1234. Tim hieu dung cu ahia so do.Bai 3 : TIm mot so biet rang so do cong voi so lon nhat co ba chu so khac nhau roi cong tiep voi so be nhat co bon chu so khac nhau thi duoc so be nhat co nam chu so.Bai 4 ; Cho ba chu so t...
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bai 1 : Tim hieu cua hai so, biet rang so lon them 735 don vi va so ben them 449 don vi thi duoc hieu moi la 2000.
Bai 2 : Khi thuc hien phep tru hai so, mot ban da so y viet sai nhu sau : o so bi tru co hai chu socuoi cung la 35 da viet thanh 53 nen phep tru sai co ket qua la 1234. Tim hieu dung cu ahia so do.
Bai 3 : TIm mot so biet rang so do cong voi so lon nhat co ba chu so khac nhau roi cong tiep voi so be nhat co bon chu so khac nhau thi duoc so be nhat co nam chu so.
Bai 4 ; Cho ba chu so tu nhieu A ; B ; C. Biet rang tong cua A va B la 492 ; tongg cua B va C la 936 ; tong cua C va A la 714. Tim ba so do.
Bai 5 : HAi kho chu atat ca 2500 tan thoc. Sau khi lay ra o moi kho so tan thoc nhu sau. thi kho thu nhat con 800 tan va kho thu hai con 500 tan. Hoi luc dau moi kho chua bao nhieu tan thoc?
tim mot phan so bang phan so 9/10 va biet neu lay tu so cua phan so do tru di 15 va giu nguyen mau so thi duoc phan so moi bang phan so 3/4?
hai so thap phan co tong la 55,22.neu doi dau phay cua so be sang trai mot hang ,roi lay hieu giua so lon va no ta duoc 37,07.tim hai so do