ROUND, ROUNDUP, ROUNDDOWN in Excel - Practice Problems & Coding Challenges

Challenge - 5 Problems

📊 Formula Result

intermediate

Rounding a Negative Number with ROUNDUP

What is the result of the formula =ROUNDUP(-3.14159, 2) in Excel?

Excel

=ROUNDUP(-3.14159, 2)

A -3.15

B -3.14

C -3.13

D -3.10

💡 Hint

ROUNDUP always rounds away from zero.

The ROUNDUP function rounds numbers away from zero. For negative numbers, this means rounding to a more negative value. So, -3.14159 rounded up to 2 decimal places becomes -3.15.

📊 Formula Result

intermediate

Using ROUNDDOWN with Positive Numbers

What is the output of =ROUNDDOWN(7.987, 1) in Excel?

Excel

=ROUNDDOWN(7.987, 1)

A 7.9

B 8.0

C 7.99

D 7.98

💡 Hint

ROUNDDOWN always rounds towards zero.

ROUNDDOWN cuts off digits after the specified decimal place without rounding up. So 7.987 rounded down to 1 decimal place is 7.9.

❓ Function Choice

advanced

Choosing the Right Function for Rounding to Nearest Integer

You want to round the number 4.3 to the nearest integer, rounding up if the decimal is 0.5 or more, and down otherwise. Which Excel function should you use?

A ROUNDUP(4.3, 0)

B ROUND(4.3, 0)

C ROUNDDOWN(4.3, 0)

D INT(4.3)

💡 Hint

Think about normal rounding rules, not just always up or down.

The ROUND function rounds to the nearest integer using standard rounding rules: decimals 0.5 or higher round up, less than 0.5 round down. ROUNDUP and ROUNDDOWN always round away or towards zero, respectively. INT always rounds down to the nearest integer.

🎯 Scenario

advanced

Rounding Currency Values for Reporting

You have a list of prices with many decimal places. You want to round all prices up to the nearest cent (2 decimal places) to avoid undercharging customers. Which formula should you use in Excel?

A =ROUND(A1, 2)

B =ROUNDDOWN(A1, 2)

C =ROUNDUP(A1, 2)

D =INT(A1*100)/100

💡 Hint

You want to always round up, never down.

ROUNDUP with 2 decimal places always rounds the number up to the nearest cent, ensuring no undercharging. ROUND rounds normally, ROUNDDOWN always rounds down, and INT truncates to whole numbers.

❓ data_analysis

expert

Counting Numbers Rounded Down to Zero

Given the list of numbers in cells A1:A5: 0.4, -0.3, 0.9, -0.7, 0.1, how many of these will become 0 when applying =ROUNDDOWN(A1, 0) to each cell?

A 5

B 2

C 4

D 3

💡 Hint

ROUNDDOWN rounds towards zero. Check each number carefully.

ROUNDDOWN with 0 decimals removes the decimal part towards zero. For positive numbers, it truncates decimals. For negative numbers, it moves towards zero (less negative). Applying to the list:

• 0.4 → 0
• -0.3 → 0
• 0.9 → 0
• -0.7 → 0
• 0.1 → 0

All 5 numbers round down to 0.