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thien102001
2 năm trước
Viết các số sau dưới dạng tỉ số phần trăm: 2/3 ; 3/4 Bài 3: Điền số thích hợp vào chỗ chấm: 2 m3 124 cm3 = …………m3 5km 2m = .................m 6,2 m3 = ................ dam3 702 tạ = ...................kg Bài 4: Tính thể tích hình lập phương có cạnh là : a) 5cm b)7cm Bài 5: Tính diện tích hình tròn có đường kính là: a) 6m b) 8dm
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