Question

№ Образец Реши самостоятельно 1 1- 2/7= 2 1+ 2/7= 3 1: 2/7= 4 3/4∙4/3= 5 2-2/5= 6 2/5+2= 7 3 1/2∙2= 8 3 1/2:2= 9 4-2 1/2= 10 4+2 1/2= 11 5:2 1/2= 12 2 1/2:5= 13 1: 1/4= 14 7∙1/7= 15 1/2-1/3=

Answer 1

Ответ:

Пошаговое объяснение:

1 1- 2/7=7/7-2/7=5/7

2 1+ 2/7=7/7+2/7=9/7

3 1: 2/7=1*7/2=7/2

4 3/4∙4/3=1

5 2-2/5=(2*5-2)/5=8/5

6 2/5+2=(2+5*2)/5=12/5

7 3 1/2∙2=6+1=7

8 3 1/2:2=(3*2+1)/4=7/4

9 4-2 1/2=2-1/2=1 1/2

10 4+2 1/2=6 1/2

11 5:2 1/2=5:5/2=2

12 2 1/2:5=5/2:5=1/2

13 1: 1/4=4

14 7∙1/7=1

15 1/2-1/3=3/6-2/6=1/6

Answer 2

Давайте решим данные математические задачи по порядку:

1. 1 - 2/7 = 5/7

2. 1 + 2/7 = 9/7

3. 1 ÷ 2/7 = 7/2

4. (3/4) * (4/3) = 1

5. 2 - 2/5 = 8/5

6. 2/5 + 2 = 12/5

7. (3 1/2) * 2 = 7

8. (3 1/2) ÷ 2 = 7/4

9. 4 - 2 1/2 = 1 1/2 (или 3/2)

10. 4 + 2 1/2 = 6 1/2 (или 13/2)

11. 5 ÷ 2 1/2 = 2

12. (2 1/2) ÷ 5 = 1/2

13. 1 ÷ (1/4) = 4

14. 7 * (1/7) = 1

15. 1/2 - 1/3 = 1/6