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Hướng dẫn giải bài tập SGK Toán lớp 4 trang 119: So sánh hai phân số có cùng mẫu số

Thứ năm - 07/12/2017 08:22
Hướng dẫn giải bài tập SGK Toán lớp 4 trang 119: So sánh hai phân số có cùng mẫu số
BÀI 1. (Hướng dẫn giải bài tập số 1 trang 119/SGK Toán 4)
So sánh hai phân số:

Hướng dẫn giải:

BÀI 2. (Hướng dẫn giải bài tập số 2 trang 119/SGK Toán 4)
a) Nhận xét:

Nếu tử só bé hơn mẫu số thì phân số đó bé hơn 1

Nếu tử số lớn hơn mẫu số thì phân số đó lớn hơn 1.
b) So sánh các phân số sau với 1:

Hướng dẫn giải:


BÀI 3. (Hướng dẫn giải bài tập số 3 trang 119/SGK Toán 4)
Viết các phân số bé hơn 1, có mẫu số là 5 và tử số khác 0.
Hướng dẫn giải:

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