Li Liang's home is 550 meters away from school. One day he walked 280 meters to school. He found that he had forgotten his math book, so he went home to get it and then went to school. Li Liang walked 560 meters more than usual this time.

Calculate the formula according to the meaning of the question:

280×2=560

So Li Liang walked 560 meters more than usual to school this time.

Multiplication operation properties:

Multiply the product of several numbers by a number so that any factor in the product can be multiplied by this number and then multiplied by other numbers. For example: (25×3 × 9)×4=25×4×3×9=2700.

Multiply a number by the difference between two numbers. You can multiply this number by the minuend and the minuend respectively, and then subtract the product. For example: (137-125) × 8 =137× 8-125× 8 = 96.