представьте в виде десятичной дроби: 3/4; 5/8; 7/4; 83/25; 5 1/2; 70 3/75; 4 21/84

Представим в виде десятичной дроби:

1) 3/4 = 0,75;

100 : 4 = 25;

3/4 * 25/25 = (3 * 25) / (4 * 25) = 75/100 = 0,75.

2) 5/8 = 0,625;

1000 : 8 = 125;

(5 * 125) / (8 * 125) = 625/1000 = 0,625.

3) 7/4 = 1,75;

100 : 4 = 25;

(7 * 25) / (4 * 25) = 175/100 = 1,75.

4) 83/25 = 3,32;

100 : 25 = 4;

(83 * 4) / (25 * 4) = 332/100 = 3,32.

5) 5 1/2 = 5,5;

10 : 2 = 5;

(1 * 5) / (2 * 5) = 5/10 = 0,5.

6) 70 3/75 = 70 1/25 = 70,04.

100 : 25 = 4;

(1 * 4) / (25 * 4) = 4/100 = 0,04.

7) 4 21/84 = 4 1/4 = 4,25.

100 : 4 = 25;

(1 * 25) / (4 * 25) = 25/100 = 0,25.