Daily math drills,
made together.

Race the clock. Answer in the comments. Print it. Repeat.

Numbers only — no language barrier, no login, all ages. A new timed drill drops every day, and the community races it together.

How it works

One drill a day. Three ways to play.

Short timed math drills on TikTok and YouTube — addition to multiplication, easy to brutal.

Post your time and score. Thousands race the same numbers, from kids to grandparents.

Grab the printable workbooks and run your own drills at home or in class — no screens needed.

The full collection in one book — every level from first digits to carry-heavy multiplication.

Pick exactly the drill you need — by operation, digits, and difficulty. Instant PDF downloads.

Study River is a lifelong-learning brand by Eidendo Inc.
See the whole family of study brands at /study.