← Back to the lesson: Adding whole tens
Practice: Adding whole tens
All the questions sit under each other, like on paper. Where you can tap (signs, yes/no, shapes), tap — do not hunt for a keyboard. Otherwise write the answer and press the tick, or Check all at the bottom. Green = right. Red = not yet. Mulai with ten. When it goes well, add more.
← Back to the explanation Next lesson: Adding to 100 →
© 2026 Ing. Martin Polak / AlgoRhino · Ketentuan penggunaan konten