The area of the square would be 4 units squared. 2 multiplied by 2 is 4, and the units are squared because we are finding area.
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.
Answer: 1
Step-by-step explanation:
Gcf of 3 : 1 * 3
Gcf of 12184 : 1 * 12184
2 * 6092
4 * 3046
8 * 1523 .......
Gcf of 1545: 1 * 1545
3 * 515
5 * 309
All the the numbers do not have any common number except 1 so therefore 1 is the only common number which makes It the GCF in all three numbers.
Answer:
The answer for A is A- 3.75
And the answer for B is B- 16