The square root of 70 is closer to the square root of 64 than the square root of 81
So the square root of 70 must be much closer to 8 than 9 And if you put the square root of 70 in your calculator you would see that it is true. It is approximately 8.3 which is closer to 8 than to 9
Because 3/6 is equal to 1/2. You multiply the 1 (in 1/2) by 3, and the 2 (in 1/2) by 3 to get 3/6. You need to have a common denominator, and 6 was the common denominator.
