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Example 1: Round 0.1284 to 2 decimal places.

Solution: The 3rd decimal number, 8, is bigger than 4, so we add 1 to the 2nd decimal number 2, and drop the rest of the decimal numbers. Our answer is 0.13.

Example 2: Round 0.1284 to 1 decimal place.
Solution: The 2nd decimal number, 2, is less than 4, so we do nothing to the 1 and drop the rest of the decimal numbers. Our answer is 0.1.

Example 3: Round 0.895 to 2 decimal places.
Solution: The third decimal number, 5, is bigger than 4, so we add 1 to 9 to get 10, and drop the rest of the decimal numbers. But, we have to carry the 1 to the 8 to get 9. So our answer is 0.90 or just 0.9.