# A Few Arithmetic Questions

#### beefy

##### New member
8(6-5) +10 equal?

4(-2)to the 2nd degree plus 8 (-2) + 3(-2) + 6 equal?
3
(1/3) (9) equals?

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#### Jameson

Staff member
8(6-5) +10 equal?

4(-2)to the 2nd degree plus 8 (-2) + 3(-2) + 6 equal?
3
(1/3) (9) equals?

1) 8(6-5)+10= ?

This is a basic use of the order of operations or PEMDAS as it is commonly taught. You should start by simplifying inside the parentheses, then multiply and lastly add. What do you get?

2) I'm not exactly sure what is being taken to the 2nd degree. You need to be very precise with parenthesis! 4(-2) to the 2nd degree could mean $$\displaystyle \left( 4(-2) \right)^2$$ or $$\displaystyle 4 \times (-2)^2$$ Which one is it? For the second part of this, +8(-2)+3(-2)+6, multiply first then add or subtract.

3) You wrote this:

4(-2)to the 2nd degree plus 8 (-2) + 3(-2) + 6 equal?
3
(1/3) (9) equals?
On the second line, where does that "3" belong? Is that part of a problem or number 3?

4) 598%/26%

Let's say that we have 100 apples. Then 598% of those apples is 5.98*100. Similarly 26% of those 100 apples is 0.26*100. Once we find those and divide what do you get?

#### HallsofIvy

##### Well-known member
MHB Math Helper
8(6-5) +10 equal?
8(1)+ 10= 18, of course. I think I learned that kind of arithmetic in third or fourth grade.

4(-2)to the 2nd degree plus 8 (-2) + 3(-2) + 6 equal?
Assuming the "2nd degree" refers only to the "(-2)", that is 4(4)+ 8(-2)+ 3(-2)+ 6= 16- 16- 6+ 6= 0.

3
(1/3) (9) equals?
That "3" is misplaced. Assuming you meant (1/3)3(9), that is (1/27)(9)= 1/9.