hieu 2 so la 65.68 . neu them vao so lon 49.5 va them so be la 7.452 thi hieu hai so luc sau la
hieu hai so la 65.68 neu them vao so lon 49.5 va them vao so be la 7.452 thi hieu hai so luc sau
hieu hai so la 65.68. neu them vao so lon 49,5 va them vao so be la 7.452 thi hieu hai so luc sau la...
hieu hai so la 65.68.neu them vao so lon 49.5va them vao so be 7.452 thi hieu hai so luc sau la...
hieu 2 so la 15,68. neu them vao so lon 9,5 : them vao so be 3,2 thi hieu 2 so luc sau la bao
Hieu hai so 15,68. Neu them vao so lon 9,5 va them vao so lon hon 3,2 thi hieu 2 so luc sau la?
minh can giai nhung bai sau
cau 1: hieu 2 so la 65.68.neu them vao so lon 49.5 va them vao so be 7.452 thi hieu 2 so luc sau la...............................
cau 2: duong tu nha Mai toi truong dai 2041m. Mai di hoc bang xe dap va ban kinh moi banh xe dap la 32.5dm.De toi truong thi moi banh xe dap cua Mai can phai quay....................vong
cau 3: cho hinh thang vuong ABCD [ vuong o A va D] co canh day be la AB va canh day lon la DC. Tu B ha duong cao BH vuong goc voi canh day lon DC. Tinh dien tich hinh thang ABCD biet canh AB dai 32cm , canh AD dai 0.3m va canh HC dai 2dm
vay dien tich hinh thang ABCD la....................................................m2
cau 4: Mot khu dat hinh thang co dien tich la 1197m.tinh do dai moi canh day biet chieu cao cua khu dat la 315m va canh day be bang 40% tong do dai 2 canh
do dai canh day be la.............................m
do dai canh day lon la................................m
Hieu cua 2 so la 38,4 .Khi them vao so lon 4,2 va them vao so be 1,4 thi so be bang 5/7 so lon .Tim hai so luc ban dau
Tim hieu cua hai so , biet rang neu them vao so lon 15,4 va them vao so be 7,8 thi duoc hieu cua hai so moi la 20,08
