Округлите дроби 5_110, 28_36, 21_49, 200_700, 56_63, 48_72, 55_60, 26_30

Question

Григорий Зайцев

Математика

24 октября, 17:31

Округлите дроби 5_110, 28_36, 21_49, 200_700, 56_63, 48_72, 55_60, 26_30

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Алия Семина · Answer 1

Округлим дроби:

1) 5/110 = 5 / (5 * 22) = 1 / (1 * 22) = 1/22 = 0.046;

2) 28/36 = (4 * 7) / (4 * 9) = (1 * 7) / (1 * 9) = 7/9 = 0.78;

3) 21/49 = (7 * 3) / (7 * 7) = (1 * 3) / (1 * 7) = 3/7 = 0.43;

4) 200/700 = (2 * 100) / (7 * 100) = (2 * 1) / (7 * 1) = 2/7 = 0.29;

5) 56/63 = (7 * 8) / (7 * 9) = (1 * 8) / (1 * 9) = 8/9 = 0.89;

6) 48/72 = (8 * 6) / (8 * 9) = (1 * 6) / (1 * 9) = 6/9 = 2 * 3 / (3 * 3) = 2 * 1/) 3 * 1) = 2/3 = 0.67;

7) 55/60 = (5 * 11) / (5 * 12) = (5 * 1) / (6 * 1) = 5/6 = 0.83;

8) 26/30 = (13 * 2) / (2 * 15) = (13 * 1) / (1 * 15) = 13/15 = 0.87.