Place Value
Chapter 2: Tens and Ones
Where a digit sits matters! The same digit can mean different things. Let's learn to build and break numbers!
Riya Organizes! 📦
Riya is putting supplies into boxes of 10
and keeping the extras loose.
"Wait!" says Milo. "In the number 34, what does the 3 mean?"
Riya thinks... "It means 3 boxes — that's 30!"
"Where a number sits changes what it means!"
Quick Recall
Remember bundles and ones?
Tap each number to see its bundles and ones!
💡 From Chapter 1: We learned that 10 ones make 1 bundle of ten. Now let's give these places names!
Tens Place & Ones Place
Every position has a name!
In a two-digit number, the left digit is in the tens place.
The right digit is in the ones place.
💡 Key Idea: The tens place tells us "how many groups of ten." The ones place tells us "how many extras."
Build the Number
Drag to build!
Tap bundles and ones to add them to the right place!
💡 Think: For 46, you need 4 in the tens place and 6 in the ones place!
Break the Number
Split into tens and ones!
Every number can be broken into tens and ones. How many of each?
💡 Remember: The left digit tells you tens, the right digit tells you ones!
Saying It Out
Express numbers in words!
We can say what a number is made of!
"Thirty-four is thirty and four"
💡 Say it: Breaking a number into its tens-value and ones-value helps us understand it better!
Same Digit, Different Value!
Position changes everything!
Look at the highlighted digit. What is its value in each number?
Tap a number to see the value of the highlighted digit!
⚠️ Important: The digit 2 in 25 means 20 (two tens), but in 52 it means just 2 (two ones). Position matters!
Numbers with Zero
Zero is a placeholder!
When there are no ones, we write 0 in the ones place. Zero holds the place!
40 = 4 tens + 0 ones
NOT the same as just "4"!
💡 Key Idea: 40 ≠ 4! The zero shows there are no ones, but we still need it to show it's four TENS, not four ones.
Practice Zone
Test your place value skills!
Chapter Quiz
10 questions
This certifies that
Math Explorer
successfully completed
Chapter 2: Place Value — Tens and Ones
Real World Place Value
See it everywhere!
Place value is all around us! Look for these examples.
🏠 Try at home: Find ₹47 using ₹10 notes and ₹1 coins. How many of each do you need?
Place value is the foundation for addition with carrying and subtraction with borrowing. A child who truly understands place value will find arithmetic much easier later.
© Pawan Nayar for Beyond Dictionary