Math · Stage 2
Make the biggest and smallest 3-digit number from digit cards
Three cards, two answers: put your big digit in the hundreds seat for the biggest number, your small one for the smallest.
✦ Math📘 Stage 2 · S2⏱ ~10 min🧒 Ages 6–7★ Free to start
I can arrange digit cards to make the biggest and the smallest 3-digit number (place value and ordering).
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Kavi's Three Cards 🃏
Kavi the owl finds three digit cards on the branch: 5, 1 and 3 🔢. "Which order makes the biggest number?" wonders Kavi. "The hundreds seat is worth the most — so my biggest card, the 5, must sit there: 531!" Then Kavi flips it around: "Smallest card in front makes the smallest: 135!"
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What your child will learn
1The hundreds seat is worth the mostA 3-digit number has three seats: hundreds, tens, ones. Here is 135 — the 1 in front is not one, it is 1 hundred (100). Tap the 100s buttons and watch the number leap by 100 each time: the front seat changes the number the most.
2Line your cards up in orderBefore you build anything, sort the cards smallest first. The bright numbers are the three cards 1, 3, 5 in order. Once they are lined up, both answers are right in front of you.
3Biggest built, smallest builtHere is the biggest you can make from 1, 3, 5: 531 — biggest card in the hundreds seat, then next biggest, then smallest. The smallest flips it: 135.
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A peek inside
Make the biggest 3-digit number from the cards 4, 1, 7.
sort big → small: 7, 4, 1
Try this at home: Cards 2, 5, 8: biggest = __ · smallest = __
Part of Math · Stage 2 · S2 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.