➕ Add It

Add two-digit numbers. Sums up to 100.

← Return to Work It

Grown-ups: tap the problem count or test time three times to adjust. Practice is untimed.

Understand it. Practice it. Make it yours.

Choose Learn It, Practice It, or Test It above.

Keep tens under tens and ones under ones. Horizontal problems can be stacked before you solve them.

Parent / teacher settings

Settings apply to the next session and worksheet. Triple-tap is a convenience lock.