Question

Выполните умножения 6 1/5*4 9 2/7*2 3*7 1/7 6*1 1/7 4 1/4*4 2 1/8*8 10*5 2/5 11 1/3*3 24 4/9*9 12 9/13*13

Answer 1

6 1/5*4 =6.2*4=24.8

9 2/7*2 =65/7*2=130/7=18 4/7

3*7 1/7 =3*50/7=150/7=21 3/7

6*1 1/7 =6*8/7=48/7=6 6/7

4 1/4*4 =17/4*4=17

2 1/8*8 =17/8*8=17

10*5 2/5 =10*5.4=54

11 1/3*3 =34/3*3=34

24 4/9*9 =220/9*9=220

12 9/13*13=165/13*13=165

Answer 2

Давайте поочередно выполним каждое из умножений:

1. 6 1/5 * 4 = (6 + 1/5) * 4 = (31/5) * 4 = 124/5 = 24 4/5.

2. 9 2/7 * 2 = (9 + 2/7) * 2 = (65/7) * 2 = 130/7 = 18 4/7.

3. 3 * 7 1/7 = 3 * (7 + 1/7) = 3 * (50/7) = 150/7 = 21 3/7.

4. 6 * 1 1/7 = 6 * (1 + 1/7) = 6 * (8/7) = 48/7 = 6 6/7.

5. 4 1/4 * 4 = (4 + 1/4) * 4 = (17/4) * 4 = 17.

6. 2 1/8 * 8 = (2 + 1/8) * 8 = (17/8) * 8 = 17.

7. 10 * 5 2/5 = 10 * (5 + 2/5) = 10 * (27/5) = 270/5 = 54.

8. 11 1/3 * 3 = (11 + 1/3) * 3 = (34/3) * 3 = 34.

9. 24 4/9 * 9 = (24 + 4/9) * 9 = (220/9) * 9 = 220.

10. 12 9/13 * 13 = (12 + 9/13) * 13 = (165/13) * 13 = 165.

Итак, результаты умножений:

1. 6 1/5 * 4 = 24 4/5.
2. 9 2/7 * 2 = 18 4/7.
3. 3 * 7 1/7 = 21 3/7.
4. 6 * 1 1/7 = 6 6/7.
5. 4 1/4 * 4 = 17.
6. 2 1/8 * 8 = 17.
7. 10 * 5 2/5 = 54.
8. 11 1/3 * 3 = 34.
9. 24 4/9 * 9 = 220.
10. 12 9/13 * 13 = 165.