Question

Round each number to 1 significant figure, estimate the answer to : 763x42 divided by 82

Answer 1

Answer:

400.

Step-by-step explanation:

The given expression is

$\frac{763 \times 42}{82}$

First, we multiply the product in the numerator, then we divide.

$\frac{763 \times 42}{82}=\frac{32,046}{82} \approx 390.8$

However, this result has more than one significant figures, it has 4 significant figures.

Remember that significant figures refers to those numbers that offer impotant information about a measurement. For example, if we measured a length of 0.00623 kilometers, the digits that gives information about the measurement are 623, so the number has 3 significant numbers.

So. if we want to do an estimation with 1 significant number, we need to round the number to 400, because it's closer to 400 than 300.

Therefore, the estimation of the answer with 1 significant number is 400.

Answer 2

the answer is 391

you get this answer by first multiping the 763 with the 42

then the answer you get from that you divide it by 82

then round the answer to one significant figure