Biet 1m gan =3,28 phut "foot", ki hieu "ft". Hoi 1ft gan bang bao nhieu m (lam tron den chu so thap phan thu 4) ?
1 kg gan bang bao nhieu pao<lam tron den chu so thap phan thu2>
mat cheo cua mot mat ban hinh chu nhat co chieu dai 1m, chieu rong 5dm la bao nhieu. nhap ket qua la so thap phan lam tron den chu so thu nhat sau dau phay
tinhs chu vi va dien tich cua mot san hinh vuong co canh do duoc la 12,4m(lam tron den chu so thap phan thu nhat)
tinh dien tich khu vuon hcn la 70,4cm va 2 canh ti le vs 4;7 (lam tron den chu so thap phan thu nhat ) . Trinh bay chi tiet cho mình thi cang tot
lam tron so 25736 den so thap phan thu 2
cho so x = 0,12345...998999 trong do o ben phai dau phai ta viet cac so tu 1 den 999 lien tiep nhau. lam tron so do den chu so thap phan thu 2003
lam tron so :
16.25;15.20.19.55(stp thu nhat)
biet on-so (inch) ky hieu "in" bang 2,54cm . hoi 1cm gan bang bao nhieu inh - so ( lam trong den so thap phan thu tu)