曹冲称象
How Cao Chong weighed an elephant
Name: ________________ Date: ________
Key words
| Word | Pinyin | Meaning |
|---|---|---|
| 大象 | dàxiàng | elephant |
| 围 | wéi | to surround; to encircle |
| 切 | qiē | to cut; to slice |
| 黑 | hēi | black; dark |
| 石头 | shítou | stone; rock |
| 大臣 | dàchén | minister (of a monarchy); high official |
| 线 | xiàn | line |
| 秤 | chèng | scale; steelyard (for weighing) |
English (for the teacher)
More than eighteen hundred years ago, Cao Cao received a very special gift: Sun Quan in the south sent him an elephant.
Everyone crowded round to look. An animal this big: how many jin could it possibly weigh? Cao Cao wanted to know too.
He asked the ministers around him, but not one of them could think of a way. Someone said, “Let’s build a huge scale!” But who could lift a scale that big? Someone else said, “Cut the elephant into small pieces and put them on the scale!” Cao Cao’s face darkened: “And what happens to my elephant?”
Just then, Cao Cao’s son Cao Chong stepped forward. He was still only a little boy, but from the age of five or six he had been as clever as a grown-up.
He said, “First, let the elephant walk onto a big boat. As soon as the elephant is on, the boat will sink down a little. Then, on the side of the boat, right where the water comes up to, we draw a line.”
“Next, let the elephant walk off the boat and put stones onto the boat instead. Keep adding them until the boat sinks back down to that line.”
“Finally, put the stones on the scale. However many jin the stones weigh altogether, that’s how many jin the elephant weighs!”
The ministers looked at one another and said nothing more. Cao Cao was delighted and had it done exactly as his son said.
Today lots of Chinese primary school pupils have read this story. The elephant was too big to go on a scale, so Cao Chong turned it into lots of small stones. So when people hit a big, hard problem, they say, “Be like Cao Chong: turn it into lots of small problems and solve them one by one.”