Question

Round off nearest 20? 5678​

Answer 1

Answer:

For rounding off to the nearest tens let us look at the number ray given below.

Consider the numbers 12 and 19.

Rounding off to the Nearest Tens

When we plot these numbers on a number line we observe that 12 lies between 10 and 20. Also 12 is nearest to 10 than 20. So, we round off 12 as 10, correct to the nearest tens.

If we consider 19, we observe that it is nearer to 20 than 10. So, we round off 19 to 20, correct to the nearest tens.

Now, let us consider the number 15.

Rounding off to the Nearest Tens

If we plot this number on number line we find that 15 lies half-way between 10 and 20. By convention, we round off 15 to 20.