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Step 1: See if the first number after the decimal point is greater than 4.

Step 2: If the number is greater than 4, drop the decimal part and add 1 to your number. Otherwise just drop the decimal part.

Example 1: Round 35.56

The first number after the decimal point is 5. This is greater than 4 so our rounded number is 35 + 1 = 36.

Example 2: Round 1.3333

The first number after the decimal point is 3. This is not greater than 4 so our rounded number is 1.