4/8 is perfectly accurate.
12
8 pounds 4 ounces
You know that 8 x 50 is 400 and 8 x 60 is 480. The quotient will be between 50 and 60.
-4
Front End Estimation can be confusing before you understand it. There are two simple steps for front end estimation: add the digits of the two highest place values, insert zeros for the other place values. Now let's put that into us for your question!189-643 =(1 & 8 are the first two digits for 189 ... 6 & 4 are the first two digits for 643)18_ - 64_ =(Fill in zeros for the place values you have emptied)180-640= -460-460
10
8.0641
It would be 8.
12
To the nearest integer, 8
90.25
8 + 10 = 18
arsshole
6/4
That is correct 5 miles is about 8 km
Estimation: 80% of 10 = 8 Actual: 79% of 13 = 10.27
8 + 11 = 19