It is 800/200 = 4.
A far better estimate, which is still easy to work out, is based on 840/240 = 84/24. Dividing the numerator and denominator by the GCF of 84 and 24, which is 12, gives 7/2 or 3.5.
The answer is 3.4979 to 4 decimal places.
An estimate of 843 divided by 241, rounded to 1 non-zero digit, would be 800 divided by 200, which equals 4 as an estimate.
Yes.
Because that is how a rational number is defined!
You CAN'T divide by zero.
Yes, always. That is the definition of a rational number.
There are two possible nonzero remainders when dividing a number by 3: 1 and 2. Any nonzero integer can be divided by 3 resulting in either a remainder of 1 or 2.
It is front-end estimation.
A non-zero number divided by itself is 1.
The number of s.f or rounding off
Yes, it is.
Yes.
The LCf of any two nonzero whole numbers is one because every nonzero whole number can be divided by it.
Because that is how a rational number is defined!
Because that is how a rational number is defined!
You CAN'T divide by zero.
An estimate is an educated guess based on prior knowledge. Rounding off is knowing the exact value but rounding it to the nearest whole number.
Yes, always. That is the definition of a rational number.
Yes, by definition.