Question

Представьте данные дроби в виде обыкновенных дробей со знаменателем 10 и 100 равных данным затем запишите их в виде десятичных дробей 3/25 ; 1/2 ; 3/4 ; 7/10; 3/20; 2/5; 7/50

Answer 1

При умножении и числителя и знаменателя на одно и тоже число - значение дроби не изменяется.
3/25 * 4/4 = 12/100 = 0,12
1/2 * 5/5 = 5/10 = 0,5
3/4 * 25/25 = 75/100 = 0,75
7/10 = 0,7
3/20 *5/5 = 15/100 = 0,15
2/5 * 2/2 = 4/10 = 0,4
7/50 * 2/2 = 14/100 = 0,14.

Answer 2

Converting Fractions to Fractions with Denominators 10 and 100

To represent the given fractions as ordinary fractions with denominators 10 and 100, we can follow these steps:

1. 3/25: - To represent 3/25 as a fraction with a denominator of 10, we multiply both the numerator and denominator by 4: (3 * 4) / (25 * 4) = 12/100. - To represent 3/25 as a fraction with a denominator of 100, we multiply both the numerator and denominator by 4: (3 * 4) / (25 * 4) = 12/100.

2. 1/2: - To represent 1/2 as a fraction with a denominator of 10, we multiply both the numerator and denominator by 5: (1 * 5) / (2 * 5) = 5/10. - To represent 1/2 as a fraction with a denominator of 100, we multiply both the numerator and denominator by 50: (1 * 50) / (2 * 50) = 50/100.

3. 3/4: - To represent 3/4 as a fraction with a denominator of 10, we multiply both the numerator and denominator by 2: (3 * 2) / (4 * 2) = 6/8. - To represent 3/4 as a fraction with a denominator of 100, we multiply both the numerator and denominator by 25: (3 * 25) / (4 * 25) = 75/100.

4. 7/10: - To represent 7/10 as a fraction with a denominator of 10, we multiply both the numerator and denominator by 1: (7 * 1) / (10 * 1) = 7/10. - To represent 7/10 as a fraction with a denominator of 100, we multiply both the numerator and denominator by 10: (7 * 10) / (10 * 10) = 70/100.

5. 3/20: - To represent 3/20 as a fraction with a denominator of 10, we multiply both the numerator and denominator by 2: (3 * 2) / (20 * 2) = 6/40. - To represent 3/20 as a fraction with a denominator of 100, we multiply both the numerator and denominator by 5: (3 * 5) / (20 * 5) = 15/100.

6. 2/5: - To represent 2/5 as a fraction with a denominator of 10, we multiply both the numerator and denominator by 2: (2 * 2) / (5 * 2) = 4/10. - To represent 2/5 as a fraction with a denominator of 100, we multiply both the numerator and denominator by 20: (2 * 20) / (5 * 20) = 40/100.

7. 7/50: - To represent 7/50 as a fraction with a denominator of 10, we multiply both the numerator and denominator by 5: (7 * 5) / (50 * 5) = 35/250. - To represent 7/50 as a fraction with a denominator of 100, we multiply both the numerator and denominator by 2: (7 * 2) / (50 * 2) = 14/100.

Converting Fractions to Decimal Fractions

To represent the fractions as decimal fractions, we can divide the numerator by the denominator:

1. 3/25: - 3/25 as a decimal fraction = 0.12.

2. 1/2: - 1/2 as a decimal fraction = 0.5.

3. 3/4: - 3/4 as a decimal fraction = 0.75.

4. 7/10: - 7/10 as a decimal fraction = 0.7.

5. 3/20: - 3/20 as a decimal fraction = 0.15.

6. 2/5: - 2/5 as a decimal fraction = 0.4.

7. 7/50: - 7/50 as a decimal fraction = 0.14.

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