Cognitive

Math

How fast can you do the math?

An addition or subtraction problem appears, and you quickly pick the right answer from the two choices below. Your accuracy and average response time show how fast you work with numbers.

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No install, no sign-up — starts right away

At a glance

Players: 1 player
Ages: 6 and up (Easy is about a 1st-grade level)
Play time: About 30 seconds to 1 minute
Levels · Modes: Normal · Easy (Easy has 8 problems, numbers 1–10)

How to play

Choose Normal (12 problems, numbers 1–20) or Easy (8 problems, numbers 1–10).
An addition or subtraction problem appears.
Tap the correct answer from the two choices below.
If you get it wrong, the right answer is shown, and the next problem comes up after a moment. When you're done, you'll see your accuracy and average time.

Tips

The two answers usually differ by only about 1 to 5. Working out just the last digit first can help you choose faster.
There are no subtraction problems with negative answers.
Focus on accuracy before speed, and your average time will naturally come down.

What it practices

Number processing speedPractice doing simple math in your head quickly.

Working memoryHolding numbers in mind while you calculate comes into play.

JudgmentQuickly tell which of two answers is right.

Great for

Kids who have just learned addition and subtraction
Seniors who want light math practice every day
Anyone who wants a quick brain wake-up

Good to know

Problems are a half-and-half mix of addition and subtraction. Easy mode uses single-digit math, which is just right for kids trying it for the first time, while Normal mode uses numbers up to 20, so adults can have fun racing the clock too.

Math · Play now →