-96-(-86) -10 -2
------------= ------= -----= -2
82-87 -5 1
Answer:
g(1) = 0
There is a remainder of 10 so you can automatically cross out 3 and 4.
Answer:
I think it is yes
Step-by-step explanation:
Answer:
Step-by-step explanation:
How about raising 286 up by 14 to 300 and compensating by lowering 428 by the same 14 Since I know that 14 + 14 is 28 then 28-14 is 14
So 428 - 14 = 414
So now I have 414 + 300 which I can do mentally - the answer is 714 and is also the answer to the original problem 428 + 286
Compensation works very well - bring one number up or down to a rounded number and compensate by doing the opposite to the other - instead of 199 + 457 - try 200 + 456
Same answer and because one of the numbers is nicely rounded, it is easy to add the other.
One more: 207 + 182 becomes 200 + 189 =389 I lowered one by 7 and raised the other one by the same 7.
