Preguntas del examen de matemáticas de séptimo grado de Liaoning

Para calcular el problema en fracciones, queda así:

1 3/7 × 49/9 - 4/3

2. 27

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3, 12× 5/6 – 2/9 ×3

4, 8× 5/4 1/4

5, 6 ÷ 3/8 – 3/8 ÷6

6, 4/7 × 5/9 3/7 × 5/9

7, 5/2 -( 3/2 ​​4/5 )

8, 7/8 ( 1/8 1/9 )

9, 9 × 5/6 5/6

10, 3/4 × 8 /9 - 1/3

11, 7 × 5/49 3/14

12, 6 × ( 1/2 2/3 )

13, 8 × 4/5 8 × 11/5

14, 31 × 5/6 – 5/6

15, 9/7 - ( 2/7 – 10/21 )

16, 5/9 × 18 – 14 × 2/7

17, 4/5 × 25/16 2/3 × 3/ 4

18, 14 × 8/7 – 5/6 × 12/15

19, 17/32 – 3/4 × 9/24

20, 3 × 2/9 1/3