Lesson 1 of 5
Counting and tens
Step 1
🥭 🥭 🥭 🥭 🥭
Count one by one. Touch each thing as you count: 1, 2, 3, 4, 5. There are 5 mangoes.
Step 2
🔟 = ●●●●●●●●●●
Ten ones make one ten. After 9 comes 10.
Step 3
23 = 🔟🔟 + ●●●
Big numbers have tens and ones. 23 is 2 tens and 3 ones.
🤝 Let's do one together
How many tens and ones are in 45?
💡 45 is 4 tens and 5 ones. The left digit tells the tens. The right digit tells the ones.
⭐ Quick quiz
Tap the right answer.
1
⚽⚽⚽⚽⚽⚽
How many balls?
✅ Count one by one: 6 balls.
2
What comes after 19?
✅ 19, then 20.
3
How many tens are in 34?
✅ 34 is 3 tens and 4 ones.
4
Which number is bigger?
✅ 52 has 5 tens. 25 has only 2 tens.