Calculate floor-of-4.5

Round numbers, floor, ceiling — step by step.

Number

Answer

-5

To find the floor of -4.5, follow the step-by-step solution below.

Step 1 — Apply the floor function

The floor function rounds down (toward negative infinity) to the largest integer less than or equal to the number.

-4.5 lies between -5 and -4. The largest integer ≤ -4.5 is -5.

Note: for negative numbers, the floor goes further from zero, not toward zero.

⌊-4.5⌋ = -5

Floor-of-4.5: look at the digit after the rounding position to decide whether to round up or down.

This is a Rounding — rounding operation

What is the answer to floor-of-4.5?
The answer is -5.

What method is used?
Round up if the next digit is 5 or more, round down if less than 5. Floor always rounds down, ceiling always rounds up.