Question

А) целых 3 3/4 + 1целая 1/2 б) 2целых 5/6 -1целая 5/12 в) 4целых-1целая 2/3 г) 3 целых 2/7-6/7 д) 1целая 1/3*4 е) 3 1/4*2/5

Answer 1

Ответ:

3 ¾ + 1 ½ = 15/4 + 3/2 = (15+6)/4 = 21/4 = 5 ¼ = 5,25.

2 5/6 - 1 5/12 = 17/6 - 17/12 = (34-17)/12 = 17/12 = 1 5/12.

4 - 1 ⅔ = 4 - 5/3 = (12-5)/3 = 7/3 = 2 ⅓.

3 2/7 - 6/7 = 23/7 - 6/7 = 17/7 = 2 3/7.

1 ⅓ * 4 = 4/3 * 4 = 16/3 = 5 ⅓.

3 ¼ * 2/5 = 13/4 * 2/5 = 13/2 * 1/5 = 13/10 = 1 3/10 = 1,3.