🔟 Place-Value Slide
Why isn’t ×10 just “add a 0”?
34 × 10 = 340. Looks like we just stuck a 0 on the end. So why does 0.3 × 10 come out as 3, not 0.30? Let’s find out what ×10 really does.
Start sliding ↓Ten copies. Every digit moves.
Press Next step and watch the digits on the place-value mat.
🧮 Place-value matStep 1 of 8
“×10? Easy. Just add a 0!”
×10 slides every digit one place left.
The 0 just fills an empty seat.
The 0 just fills an empty seat.
Your turn: 5 sliding challenges
Same mat, same slide. Can you dodge the add-a-0 trap every time?
🎯 Challenge0 of 5 done
⭐ You beat the trap
×10 is a slide, not a sticker.
× 10every digit slides 1 place left
× 1002 places left
(× 1000: 3)
(× 1000: 3)
÷ 10every digit slides 1 place right
The decimal point never moves. A 0 only shows up when a seat is left empty, so 34 × 10 = 340, but 0.3 × 10 = 3 and 45 ÷ 10 = 4.5.