Question

What is approximation? Write down the rules for rounding off​

Answer 1

Explanation:

An approximation is anything that is intentionally similar but not exactly equal to something else

Answer 2

Answer:

An approximation is anything that is similar, but not exactly equal, to something else. A number can be approximated by rounding. A calculation can be approximated by rounding the values within it before performing the operations .

Rules for rounding off:

• In rounding off numbers, the last figure kept should be unchanged if the first figure dropped is less than 5.
• In rounding off numbers, the last figure kept should be increased by 1 if the first figure dropped is greater than 5.
• In rounding off numbers, if the first figure dropped is 5, and all the figures following the five are zero or if there are no figures after the 5, then the last figure kept should be unchanged if that last figure is even
• In rounding off numbers, if the first figure dropped is 5, and all the figures following the five are zero or if there are no figures after the 5, then the last figure kept should be increased by 1 if that last figure is odd
• In rounding off numbers, if the first figure dropped is 5, and there are any figures following the five that are not zero, then the last figure kept should be increased by 1.

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