6.7.1.1. Ceiling
The ceiling of a number x refers to the smallest integer (integral part) greater than x.
Finding the integral part can be done in two ways:
Method 1: Ceil (x)
To find the ceiling of a real number x, type the word “ceil” using the letter keys. Then enter the number. If the argument is longer than one term, enclose it in parentheses.
Finding the integral part can be done in two ways:
Method 1: Ceil (x)
To find the ceiling of a real number x, type the word “ceil” using the letter keys. Then enter the number. If the argument is longer than one term, enclose it in parentheses.
Examples
Find the integral part of each number using the ceiling function.
1) 12.35
2) 6.025
3) 1.25 × 3.02
4) 6.354 × 1.02 - 0.25
5) 0.235 + 1.6 - 1.0578 ÷ 0.2
1) 12.35
2) 6.025
3) 1.25 × 3.02
4) 6.354 × 1.02 - 0.25
5) 0.235 + 1.6 - 1.0578 ÷ 0.2
Solutions
Type in the following:
1) ceil(12.35)
2) ceil(6.025)
3) ceil ( 1.25 × 3.02)
4) ceil (6.354 × 1.02 - 0.25)
5) ceil (0.235 + 1.6 - 1.0578 ÷ 0.2)
1) ceil(12.35)
2) ceil(6.025)
3) ceil ( 1.25 × 3.02)
4) ceil (6.354 × 1.02 - 0.25)
5) ceil (0.235 + 1.6 - 1.0578 ÷ 0.2)
Method 2: Rounding Using Ceiling Mode
You can set the Rounding mode to ceiling instead of retyping "ceil."
1) Tap the menu button. Then, select Settings.
1) Tap the menu button. Then, select Settings.
2) Tap Calculator.
3) Tap Number format.
4) Since rounding modes are not available for Auto, set the number format to Decimal.
5) Tap Rounding mode.
6) Set the rounding mode to Ceiling.
7) Tap Decimal digits to set the number of decimal digits to round to.
8) For this example, set the number of decimal digits to 0. Then go back to the calculator window.
9) Enter the number or expression into the input field. Note that the answer is rounded to the smallest integer greater than the result. The answers match those found using Method 1.
