Games
Tap a game to play.
Multiplying by One Digit
Multi-digit multiplication, one step at a time — carry the tens, hold the ones place.
Multiplying by Tens
×20, ×30 … ×90 — cross out the zero, bring it down, then multiply like you know how.
Multiplying by Two Digits
The whole algorithm — two rows of products, then add them up. ×24, ×57 and friends.
Long Division
Divide step by step — Find the multiple, Multiply, Subtract, Bring down.
Rounding Mission
Round to any place — build the number line, place the number, decide.
Equation Missions
Turn a story into an equation — name the unknown, follow the steps, match the whole story. English · Español
Place Value
Tenths, hundredths, thousandths — read the model, find the digit, name its value, build the number.