Математика 4-7 класс Анна

Помогите пожалуйста

0
Ответы:

1.006

17,75 + 9(1/6) = 17(15/20) + 9(1/6) = 355/20 + 55/6 = 1616/60 = 323/12

323/12 * 1,2 = 323/12 * 1(2/10) = 323/12 * 12/10 = 323/10

10,3 - 8(1/2) = 10(3/10) - 8(1/2) = 103/10 - 17/2 = 18/10 = 9/5

9/5 * 5/9 = 1

323/10 * 1 = 323/10

6,8 - 3(3/5) = 6(8/10) - 3(3/5) = 68/10 - 18/5 = 68/10 - 36/10 = 32/10 = 16/5

16/5 * 5(5/6) = 16/5 * 35/6 = 560/30 = 56/3

3(2/3) - 3(1/6) = 11/3 - 19/6 = 22/6 - 19/6 = 3/6 = 1/2

1/2 * 56 = 28

56/3 : 28 = 56/3 * 1/28 = 56/84 = 2/3

323/10 + 2/3 = 969/30 + 20/30 = 989/30

989/30 - 27(1/6) = 989/30 - 163/6 = 989/30 - 815/30 = 174/30 = 29/5 = 5(4/5)

0
Отв. дан Examplez

Все примеры разобьем на действия:

1.001

7 - 6,35 = 0,65

0,65 / 6,5 = 0,1

0,1 + 9,9 = 10

1,2 / 36 = 1(2/10) / (36/1) = 6/5 : 36/1 = 1/30

1,2 / 0,25 = 120 / 25 = 4,8

1/30 + 4,8 = 1/30 + 48/10 = 29/6

29/6 - 1(5/16) = 169/148

169/148 : 169/24 = 169/148 * 24/169 = 24/48 = 1/2

10 : 1/2 = 20

1.002

7/9 - 47/72 = 56/72 - 47/72 = 9/72 = 1/8

1/8 : 1,25 = 1/8 : 5/4 = 1/10

1/10 + 7/40 = 4/40 + 7/40 = 11/40

0,358 - 0,108 = 0,25

11/40 : 0,25 = 11/40 : 1/4 = 11/10

11/10 * 1,6 = 11/10 * 16/10 = 176/100 = 44/25

44/25 - 19/25 = 25/25 = 1

1.003

0,5 : 1,25 = 0,4

7/5 : 1(4/7) = 7/5 : 11/7 = 49/55

0,4 + 49/55 = 2/5 + 49/55 = 71/55

71/55 - 3/11 = 71/55 - 15/55 = 56/55

56/55 * 3 = 168/55

1,5 + 1/4 = 15/10 + 1/4 = 30/20 + 5/20 = 35/20 = 7/4

7/4 : 18(1/3) = 7/4 : 55/3 = 21/220

168/55 : 21/220 = 168/55 * 220/21 = 32

1.004

2,7 - 0,8 = 1,9

1,9 * 2(1/3) = 19/10 * 7/3 = 133/30

5,2 - 1,4 = 3,8

3,8 : 3/70 = 38/10 : 3/70 = 38/10 * 70/3 = 266/3

133/30 : 266/3 = 133/30 * 3/266 = 1/20

1/20 + 0,125 = 1/20 + 125/1000 = 1/20 + 25/200 = 35/200 = 7/40

7/40 : 2(1/2) = 7/40 : 5/2 = 14/200 = 7/100

7/100 + 0,43 = 7/100 + 43/100 = 50/100 = 1/2

1
Отв. дан Examplez
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