Các dạng bài thi violympic lớp 5

Tom tat Cac dang bai thi violympic lop 5: ...ong mot phep chia hai so tu nhien biet thuong bang 3 so du bang 41 va biet tong cua so bi chia, so chia va so du bang 426. Tim so chia va so bi chia cua phep chia do. Bai giai: So chia la 86 So bi chia la 299 ******************* BAI SO 44: So nho nhat co 3 chu so ma chia het cho ca 2; ...nhat 2,5 lit va can thu 3 dung 20,4 lit. Tinh tong so lit dau dung trong ba can do. Tra loi: Tong so dau dung trong ba can do la…. Lit ****************** BAI SO 76: Hai kho thoc chua tat ca 145 tan thoc, biet neu chuyen 12 tan tu kho A sang kho B thi luc nay so thoc kho A bang 2/3 so thoc ...so va co 2307 chu so Vay :So chu so day so tu nhien tu so 1 den so 868 la: ( 9 + 180 + 2307) = 2496 chu so Vi co vi tri thu 3 tu cuoi len nen chu so 8 hang tram cua so 868 la chu so thu 2494 . DS: 2494 ****************** BAI SO 98: Tong hai so bang 88,36 neu tang so thu nhat len 2,5 lan ...