Decimal Operations: addition, subtraction and more

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Colorful balls with decimal numbers orbiting a central math operation in the online game

Decimal Operations: addition, subtraction and more

About Decimal Operations

Decimal Operations is an online educational game designed to practice the four basic operations — addition, subtraction, multiplication and division — using numbers with a decimal point. Unlike a worksheet of decimal exercises worksheet on paper, here every correct answer is celebrated instantly, which keeps kids motivated while they review mental math with decimals. If you're looking for more challenges like this, you can visit the math games section of Ludorex, with more activities to reinforce math skills at home or in the classroom.

How do you play Decimal Operations?

In the center of the screen, a decimal operation appears (for example, a subtraction like 3.2 − 1.7) and several balls with different numbers orbit around it. Your task is to identify which of those balls holds the correct result and click on it before it drifts away. The game has 5 levels, each focused on one type of operation — adding decimals, subtracting decimals, multiplying and dividing with decimals — so you can move from the simplest to the most complex at your own pace.

Look at the math operation that appears in the center.
Calculate the decimal result mentally.
Click on the ball showing that number before you miss it.

Decimal Operations controls

PC

Mouse: click on the ball with the correct result.

Mobile and tablet

Screen tap: select the ball with the correct answer.

What do you learn in Decimal Operations?

Add and subtract decimal numbers confidently.
Multiply and divide quantities with a decimal point.
Speed mental math under time pressure.
Understanding of place value in decimal digits.

Recommended from age 9, when the school curriculum covers decimal operations in more depth.

Tips for playing better: Decimal Operations

Round the decimals to whole numbers in your head to rule out obviously wrong balls.
Start with the addition level before moving on to the more demanding multiplication and division.
Pay attention to where the decimal point goes: it's the most common mistake when calculating with decimals.
Practice a little each day instead of one long session; calculating with decimals improves with repetition.

Decimal Operations FAQ

Is this decimal operations game hard?

No, it's designed with 5 levels of increasing difficulty, so you can start with the simplest additions and subtractions before tackling multiplication and division.

From what age can you play with decimal addition and subtraction?

It's recommended from age 9, once the concept of decimal numbers has already been taught at school, although anyone who wants to review arithmetic can enjoy it.