Сравните дроби, приведя их к общему знаменателю: 1/5 и5/18,12/24 и1/2,7/20 и10/15,5/12 и3/4,2/5 и3/8,6/25 и1/4

1) 1/5 = (1 * 18) : (5 * 18) = 18/90;

5/18 = (5 * 5) : (18 * 5) = 25/90.

18/90 < 25/90, следовательно 1/5 < 5/18.

2) 1/2 = (1 * 12) : (2 * 12) = 12/24;

12/24.

12/24 = 12/24; 1/2 = 12/24.

3) 7/20 = (7 * 3) : (20 * 3) = 21/60;

10/15 = (10 * 4) : (15 * 4) = 40/60;

21/90 < 40/60; 7/20 < 10/15.

4) 3/4 = (3 * 3) : (4 * 3) = 9/12;

5/12;

9/12 > 5/12; 3/4 > 5/12.

5) 2/5 = (2 * 8) : (5 * 8) = 16/40;

3/8 = (3 * 5) : (8 * 5) = 15/40.

16/40 > 15/40; 2/5 > 3/8.

6) 6/25 = (6 * 4) : (25 * 4) = 24/100;

1/4 = (1 * 25) : (4 * 25) = 25/100.

24/100 < 25/100; 6/25 < 1/4.