🧱 Ten Makes a Trade
Is a 3 always worth three?
Write 333. That’s three 3s. Are they all worth the same? Let’s snap cubes into rods, rods into flats, and unpack every 3 to see what it’s really worth.
Start building ↓Every digit sits in a seat.
Press Next step. Watch what happens when a seat gets 10.
🧱 The place-value matStep 1 of 7
“A 3 is a 3. All three 3s are worth three!”
A digit’s worth depends on its seat.
Same 3, different seat, different worth.
Same 3, different seat, different worth.
Your turn: 5 place-value challenges
Read the seats, unpack the digits, build the biggest number you can.
🎯 Challenge0 of 5 done
⭐ You saw through the trap
The seat sets the worth.
3in the ones seat
is worth 3
is worth 3
30in the tens seat
is worth 30
is worth 30
300in the hundreds seat
is worth 300
is worth 300
3 000in the thousands seat
is worth 3 000
is worth 3 000
Ten of anything trade for one of the next seat to the left: 10 ones make a ten, 10 tens make a hundred, 10 hundreds make a thousand. So every seat is worth 10 times the seat on its right. That’s why just four digits can count all the way to 9 999, and a zero is how you say “this seat is empty”.