Counting tens and ones – up to 99

Key notes :

🔢 Understanding Place Value

Every number has two places:
👉 Tens place and Ones place

Example: In 47,

• 4 is in the ✨tens place✨ → means 4 tens = 40
• 7 is in the 💫ones place💫 → means 7 ones = 7

---

🧮 Counting by Tens

• Counting by tens means jumping 10 numbers at a time ➡️
  👉 10, 20, 30, 40, 50, 60, 70, 80, 90 🎈
• Each step adds one ten bundle (🎁 of 10 sticks or objects).

---

🪵 Counting by Ones

• Counting by ones means going one number at a time ➡️
  👉 1, 2, 3, 4, 5, 6, 7, 8, 9 🌟
• Each item is a single one (like 1 stick, 1 bead, or 1 block).

---

🧱 Making Numbers Using Tens and Ones

Numbers up to 99 are made using tens and ones blocks.

• Example: 58 = 5 tens (🟦🟦🟦🟦🟦) + 8 ones (🟥🟥🟥🟥🟥🟥🟥🟥)

---

🎯 Tens and Ones in Words

• 21 → Two tens and one one
• 34 → Three tens and four ones
• 90 → Nine tens and zero ones
  🗣 Say it as: “Twenty-one”, “Thirty-four”, “Ninety”

---

🧩 Using Bundles to Count

• 1 bundle of ten sticks = 10
• 2 bundles = 20, 3 bundles = 30, … up to 9 bundles = 90
• Add extra single sticks to show ones.
  Example: 🎁🎁🎁 + 🎍🎍 = 32 (3 tens and 2 ones)

---

🎨 Fun Tip for Students

💡 Always count tens first, then ones!

• Example: In 67, count 👉 6 tens (60) ➕ 7 ones (7) = 67

---

🧠 Remember:

• 🟨 Tens tell how many groups of 10.
• 🟩 Ones tell how many single units.
• Together they make numbers up to 99! 🎉

Learn with an example

Let’s practice!