575 / 14
Use easy multiples of 14 that do not exceed 575. Use 10.
(1) 14*10 = 140 575 -140 = 435
(2) 14*10 = 140 435 - 140 = 295
(3) 14*10 = 140 295 -140 = 155
(4) 14*10 = 140 155 - 140 = 15
Now you cannot use another 10*14. Then just divide 15 by 14 which gives 1 and have remainder 1
(5) 15/14 = 1
15 - 14 = 1 = Remainder
Then, the sum of the partial quotients is 10+10+10+10+1 = 41; and you have remainder 1, therefore 575 = 41*14 + 1
And the result of the division is 575/14 = 41 plus remainder 1
The answer is c because you add 4/19x four time because it is a square. That will be 16/19x. Then you add -9 four time for the same reason and end up with -36.
I think it is 1/2. (just filling the 20 characters now)
3 is, since you can divide both 6 and 3 by 3.
Simply look at the factors for each,
1, 3 for 3
1, 2, 3, 6 for 6.
You can write it as:
-8 + 4 + -9
Subtracting a negative is the same thing as adding a positive. Hope this helps!