DE THI TOAN HOC SINH GIOI LOP 5.doc

# DE THI TOAN HOC SINH GIOI LOP 5.doc - S GIO DC V O TO HUYN...

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S GIÁO D C VÀ ĐÀO T O KÌ THI H C SINH GI I TI U H C C P HUY N AN GIANG Ngày thi: 23-02-2014 Môn thi: TOÁN Th i gian: 90 phút Bài 1: (5 đi m) Tính giá tr bi u th c: a) 1168,97 + 96,45 x 9 – 161,14 : 7 b) ( 18 1 27 1 9 1 ) : ( 18 1 27 1 9 1 ) = Bài 2: (5 đi m) a) Không quy đ ng m u s , t s . hãy so sánh. ử ố 19 16 17 14 ; 36 9 48 12 b) Tính nhanh: 1014 2014 151 1000 150 2014 Bài 3 : (5 đi m) Cho phép chia hai s t nhiên có th ng là 3 và s d là 87. T ng s b chia, s ố ự ươ ư chia, th ng s và s d b ng 669. Tìm s b chia và s chia c a phép chia này. ươ ư Bài 4 : (4 đi m) M t m nh đ t hình ch nh t. N u chi u dài tăng thêm 4m, chi u r ng tăng thêm ế 5m thì di n tích tăng thêm 250m 2 . n u ch có chi u r ng tăng thêm 5m thì di n tích tăng ế thêm 150m 2 . Tính di n tích m nh đ t hình ch nh t ban đ u.

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