Math · Stage 1
Subtract 3-digit numbers: take away and trade with blocks
Subtract 3-digit numbers by taking away hundreds, tens and ones and trading with blocks, even across zeros.
✦ Math📘 Stage 1 · S1⏱ ~9 min🧒 Ages 5–6★ Free to start
subtract 3-digit numbers by taking away hundreds, tens and ones and trading with blocks, even across zeros
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The mango stall
Ayu helps at her uncle's mango stall in the kampung. This morning the stall has 400 mangoes. A school buys 137 of them. Ayu looks at the zeros in 400. How many mangoes are left? She has hundreds, but no tens and no ones to give. By the end I can subtract up to 1000 and trade across zeros.
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What your child will learn
1Warm-up: ones, tens and hundreds
2Six words for subtracting
3Take away ones and tens
4Two 3-digit numbers, no trade
5When the ones are too few
6Which sums need a hundred traded
7Two trades in one sum
8Subtract across a zero
9Stories about how many are left
10Fix four wrong answers
11Build and take away
12Check your thinking
13I can subtract 3-digit numbers
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A peek inside
Sari has 489 stickers and gives away 5. Line up the digits and find how many are left.
Line up: the 5 goes under the 9 in the ones<br>Ones: 9 - 5 = 4<br>The 8 tens and 4 hundreds stay the same<br>So 489 - 5 = 484 stickers left
Try this at home: Sari has 489 stickers and gives away 5. Line up the digits and find how many are left.
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Math · Stage 1 · S1 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.