Question

1 1/4*1 1/5 2) 2 1/2*2 4/5 3) 2 2/7* 1 1/8 4) 1 3/5*7 1/2 5) 2 1/7* 2/2/ 2/15 6) 2 2/9*2 19/40 7) 2 1/10*2/1/7 8) 4 1/6*1 2/5 9) 1 4/7*2 6/11 10) 1 1/5* 2 11/12 11) 7 1/2*7 1/15 12) 7 5/9*1 1/17

Answer 1

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Пошаговое объяснение:

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Answer 2

Let's solve the given multiplication problems:

1. 1 1/4 * 1 1/5:

To multiply mixed numbers, we first convert them into improper fractions.

1 1/4 = (4 * 1 + 1) / 4 = 5/4 1 1/5 = (5 * 1 + 1) / 5 = 6/5

Now we can multiply the fractions:

(5/4) * (6/5) = (5 * 6) / (4 * 5) = 30/20

Simplifying the fraction, we get 3/2.

2. 2 1/2 * 2 4/5:

Converting to improper fractions:

2 1/2 = (2 * 2 + 1) / 2 = 5/2 2 4/5 = (5 * 2 + 4) / 5 = 14/5

Multiplying the fractions:

(5/2) * (14/5) = (5 * 14) / (2 * 5) = 70/10

Simplifying the fraction, we get 7/1 or 7.

3. 2 2/7 * 1 1/8:

Converting to improper fractions:

2 2/7 = (7 * 2 + 2) / 7 = 16/7 1 1/8 = (8 * 1 + 1) / 8 = 9/8

Multiplying the fractions:

(16/7) * (9/8) = (16 * 9) / (7 * 8) = 144/56

Simplifying the fraction, we get 9/7.

4. 1 3/5 * 7 1/2:

Converting to improper fractions:

1 3/5 = (5 * 1 + 3) / 5 = 8/5 7 1/2 = (2 * 7 + 1) / 2 = 15/2

Multiplying the fractions:

(8/5) * (15/2) = (8 * 15) / (5 * 2) = 120/10

Simplifying the fraction, we get 12/1 or 12.

5. 2 1/7 * 2/2/2/15:

Converting to improper fractions:

2 1/7 = (7 * 2 + 1) / 7 = 15/7 2/2/2/15 = 2 / (2/15) = 2 * (15/2) = 30/2 = 15

Multiplying the fractions:

(15/7) * 15 = (15 * 15) / 7 = 225/7

6. 2 2/9 * 2 19/40:

Converting to improper fractions:

2 2/9 = (9 * 2 + 2) / 9 = 20/9 2 19/40 = (40 * 2 + 19) / 40 = 99/40

Multiplying the fractions:

(20/9) * (99/40) = (20 * 99) / (9 * 40) = 1980/360

Simplifying the fraction, we get 11/2.

7. 2 1/10 * 2/1/7:

Converting to improper fractions:

2 1/10 = (10 * 2 + 1