How do you play Decimal Race?

Tap the right decimal to move your car: name a shaded grid, pick the bigger decimal or add two decimals. 15 correct answers reach the finish; beat the three computer cars to win.

What decimal skills are in the race?

Naming shaded grids and bars, comparing two decimals and adding decimals, or a mix of all three.

Is Decimal Race free?

Yes. It is free, has no ads inside the game and needs no account.

What grade is this decimal racing game for?

Grades 4 and 5. Start with Name the picture on Easy, then move to comparing and adding.

Does it work on phones?

Yes. The answers are big buttons, so it works well on phones and tablets as well as computers.

Decimal Race: a decimals racing game

Name shaded grids, pick the bigger decimal or add two decimals to speed up your car. A free decimal race game for any device. Grades 4–5.

🧒 Kids: Tap the right decimal to make your car zoom! Beat the 3 computer cars to the 🏁 flag.

How to play

Choose the questions (name the picture, which is bigger, adding decimals or a mix of all three) and a speed: Easy, Medium or Hard.
Press Start the race. A question appears under the track with two or three decimals to choose from.
Tap the right decimal. Every right answer moves your car forward.
A wrong answer stalls your engine for a moment and shows the right answer.
15 right answers reach the flag. Beat the three computer cars to win!

For parents and teachers ↓

What your child practices

Three core grade 4 and 5 decimal skills, at speed. Children name the shaded part of a hundred grid or tenths bar (4.NF.C.6). They also compare two decimals (4.NF.C.7) and add decimals (5.NBT.B.7). The wrong choices are the classic mistakes. They include swapping tenths and hundredths, thinking a longer decimal is bigger, and lining up the last digits. The results screen lists every missed question with its answer.

Which setting to choose

Setting	Example	Good for	Learn it first
Name the picture	a hundred grid with 35 squares shaded	Grade 4	tenths, hundredths
Which is bigger?	0.5 or 0.48	Grades 4–5	comparing decimals
Adding decimals	3.5 + 1.25: 4.75, 1.60 or 4.85?	Grade 5	adding decimals
Mix of all three	any of the above	Grades 4–5	the place value chart

Start with the skill your child is learning in school. “Which is bigger?” is the trickiest at speed. Many pairs are built to catch the “longer is bigger” mistake, such as 0.5 and 0.498. Children who add zeros in their head (0.500 and 0.498) find it much easier.

Once your child can finish the mixed race on Medium without stalling, the basics of decimals are secure. Check with the decimals quiz, then move on to multiplying decimals.

Tips for parents

Start on Easy with “Name the picture”. Move up a speed when your child wins twice in a row.
If your child keeps stalling on “Which is bigger?”, practice a few pairs on the place value chart first.
Ask “how many tenths?” when a comparison is missed. Comparing the tenths digit solves most pairs.
Your best time for each setting is saved on this device. Racing your own best is the real goal.
Three races a day, about 5 minutes, is plenty.

In the classroom

Put it on the projector and let children call out the answer as a class, or have them race on tablets with the same settings and compare finishing times. No logins, and no data leaves the device.