6.7.1.4. Half to Even
The half to even rule states that a number with a fractional half is rounded to the closest even integer. For example, 2.5 is rounded to 2, 3.5 is rounded to 4, 5.5 is rounded to 6 and 8.5 is rounded to 8.
The rule only applies to fractional halves. Fractional parts that are higher than 0.5 are still rounded to the next highest integer and those lower than 0.5 are rounded to the next lowest integer. 4.5 is rounded to 4, but 4.2 is rounded to 4 and 4.7 is rounded to 5.
To enable half to even rounding:
1) Tap the menu button and select Settings.
The rule only applies to fractional halves. Fractional parts that are higher than 0.5 are still rounded to the next highest integer and those lower than 0.5 are rounded to the next lowest integer. 4.5 is rounded to 4, but 4.2 is rounded to 4 and 4.7 is rounded to 5.
To enable half to even rounding:
1) Tap the menu button and select Settings.
2) Tap Calculator.
3) Tap Number format.
4) Set the number format to Decimal to enable rounding.
5) Tap Rounding.
6) Set the decimal digits to 0.
7. Tap Rounding mode.
8) Set the rounding mode to Half to even.
Go back to the calculator window.
Examples
Use half to even rounding to find the integer part of each of the following:
1) 3.5
2) 5.5
3) 8.5
4) 9.5
5) 4.5
6) 4.2
7) 4.7
Use half to even rounding to find the integer part of each of the following:
1) 3.5
2) 5.5
3) 8.5
4) 9.5
5) 4.5
6) 4.2
7) 4.7
Solutions
Make sure rounding is set to half to even.
1) Type in 3.5
2) Type in 5.5
3) Type in 8.5
4) Type in 9.5
5) Type in 4.5
6) Type in 4.2
7) Type in 4.7
Make sure rounding is set to half to even.
1) Type in 3.5
2) Type in 5.5
3) Type in 8.5
4) Type in 9.5
5) Type in 4.5
6) Type in 4.2
7) Type in 4.7
