Giải bài tập thực hành Toán 5, Tiết 8. Ôn tập: Phép nhân và phép chia hai phân số

Thứ ba - 08/10/2019 23:19
Hướng dẫn giải chi tiết bài tập thực hành Toán 5, Tiết 8. Ôn tập: Phép nhân và phép chia hai phân số
1. Tính:
tiet 8 tinh
2. Tính (theo mẫu):
tinh theo mau
3. Một tấm bia hình chữ nhật có chiều dài m, chiều rộng m. Chia tấm bìa đó thành ba phần bằng nhau. Tính diện tích của mỗi phần.
Bài giải
Diện tích tấm bìa là:
 (m2)
Diện tích mỗi phần là:
 (m2)

Đáp số:  (m2)

4. Tính:












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