Question

explain two ways to evaluate 15(90-3)

Answer 1

      1305  
90-3=87
87*15=1305
15(90-3)
15*90=1350
15*3=45
1350-45=1305

Answer 2

1st way:
Use the order of operations, PEMDAS.
15(90-3)
15(87)
1305

2nd way:
You can(emphasize on can) use the distributive property.
This is 15(90)-15(3) which is 1305.

*Important: Using the distributive property will not always work for whole numbers. It would only actually work for variable equations.