按要求写算式

1 1 1 1

2 × 3 =

2 - 3

1 1 1 1

5 × 6 = 5 - 6

2 2 2 2

7 × 9 =

7 - 9

2 × 2 = 2 - 2

11 13 11 13

3 × 3 3 3

5 8 = 5 - 8

3 × 3 3 3

7 10 = 7 - 10

4 4 4 4

5 × 9 =

5 - 9

4 × 4 = 4 4

7 11 7 11

2 × 2 = 2 2

9 11 9 11

5 5 5 5