Tens and ones: numbers to 100
Bundle ten ones into a ten. Build and read numbers to 100 with tens and ones.
📖 Start here: read the steps of the “Lesson” in order (1, 2, 3 …) and answer each question. Then continue with “Practice”.
- UK: Year 1
- France: grade 1
- Germany: grade 1
- Iran: grade 1
- Afghanistan: grade 1
- Syria: grade 1
- Palestine: grade 1
- Ukraine: grade 1
- Russia: grade 1
Guide
This studio is for Year 1. The sentences are short; read them aloud if your child can't read yet. The picture above each mission shows which button to press.
Each column is a place: the ones on the right, the tens on the left. Under each column, the place-value chart shows that column's digit.
The ← 10 button bundles ten ones into one ten. The 1 → button breaks a ten into ten ones. The number stays the same; only the way it is made changes.
If a column holds 10 or more, its digit turns red: only one digit fits in each place. So it's time to exchange.
Use the buttons above the picture to switch to the abacus, which shows the same thing with beads.