The Make-Ten Trick: 9 + 4
⏱ 0:25📘 Grade 1 · Adding within 20
9 needs 1 more to make 10, so split 4 into 1 and 3: 9 + 1 = 10, then 10 + 3 = 13. Watch it happen in a ten-frame.
The videos are narrated in Mandarin Chinese with on-screen subtitles.
📚 What you will learn
- 9 + 4: 9 needs 1 more to make 10.
- Split the smaller number: 4 = 1 and 3.
- First make ten: 9 + 1 = 10. Then add the rest: 10 + 3 = 13.
- Make-ten steps: look at the bigger number, split the smaller one, make 10, then add the rest.
- It works for 8 + 5, 7 + 6 and so on: 8 needs 2, 7 needs 3.
🎙️ What the video says (in Chinese)
- 9 + 4 = ？用凑十法，一下就算出来！
- 格子里有 9 个红点，旁边还有 4 个蓝点。
- 9 和 1 凑成 10，所以把 4 分成 1 和 3。
- 拿 1 个过来，正好凑满 10 个！
- 10 + 3 = 13，所以 9 + 4 = 13！
- 看大数，拆小数，先凑成十，再去加！
✏️ Try it yourself
Use the make-ten trick: 9 + 6 = ?
Show answer
Split 6 into 1 and 5: 9 + 1 = 10, 10 + 5 = 15
8 + 5 = ?
Show answer
Split 5 into 2 and 3: 8 + 2 = 10, 10 + 3 = 13
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