What is : 1.25 + (-0.75)

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Landon wrote that 3−2.6=4. which statement about his answer is true?

With number 11 ( show how you got the answer)