Выполните умножение 1) 6 1/4* 2/25. 2)5/13* 9 1/10. 3)5 1/5 *25/38. 4) 7/9 * 1 4/5 5) 12...

Question

Выполните умножение 1) 6 1/4* 2/25. 2)5/13* 9 1/10. 3)5 1/5 *25/38. 4) 7/9 * 1 4/5
5) 12 3/5 * 5 6) 13 * 2 1/26 7) 1 1/15 * 3 8) 2 * 8 3/4

Answer 1

1) 6 1/4* 2/25 = 25/4 * 2/25 = 1/2 

2)5/13* 9 1/10 = 5/13 * 91/10 = 7/2 = 3 1/2

3)5 1/5 *25/38 = 26/5 * 25/38 = 65/19 = 3 8/19

4) 7/9 * 1 4/5 = 7/9 * 9/4 = 7/4 = 1 3/4

5) 12 3/5 * 5 = 63/5 * 5/1 = 63 6) 13 * 2 1/26 = 13/1 * 53/26 = 53/2 = 26 1/27) 1 1/15 * 3 8) 2 * 8 3/4

Comments

в конце какая-то путаница, сейчас распишу

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5) 12 3/5 * 5 = 63/5 * 5/1 = 63

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6) 13 * 2 1/26 = 13/1 * 53/26 = 53/2 = 26 1/2

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7) 1 1/15 * 3 = 11/15 * 3/1 = 11/5 = 2 1/5

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8) 2 * 8 3/4 = 2/1 * 35/4 = 35/2 = 17 1/2