109 Liang Chengcai is Leaving
After spending a night in the mountains and getting caught in such a heavy rain, he was still alive. He was really lucky.
“I hope he’ll be smarter after this…”
When she got home, Aunt w.a.n.g was also there.
She was also gossiping about the Lin family with her mother.
Seeing Aunt w.a.n.g happily telling her mother about the Lin family’s misfortune, Lin Xiaoyue couldn’t help but laugh in her heart.
It seemed like the Lin family was hated by many.
The days pa.s.sed by quickly. Jiang Dahe came over in advance and arranged some things for Lin Xiaoyue before leaving.
Lin Xiaoyue was going to tell Liang Chengcai that she had to reschedule the cla.s.s.
However, Liang Chengcai told her that he was about to leave Qingshi Town. He hoped that Lin Xiaoyue could take one day to teach him all the speed calculation methods.
Hence, Lin Xiaoyue had to rush to give Liang Chengcai a lesson the day before the construction started.
When she arrived at Ruyi Restaurant, after Liang Chengcai paid Lin Xiaoyue for the prey, he delegated work to his successor. Then, he went to the room next door with Lin Xiaoyue.
“You’re leaving so urgently?”
“Yes, I am leaving tomorrow.”
Then, he took out a silver note from his sleeve and handed it to Lin Xiaoyue.
Lin Xiaoyue was stunned.
“This is the gift I promised to give you. The extra 30 tables can be considered as a housewarming gift.”
“Thank you.” Lin Xiaoyue accepted it graciously.
It would be a waste not to take it.
Liang Chengcai looked a little disappointed.
“Let’s start.” He finally said.
“Yes.”
First, she asked Liang Chengcai to recite the multiplication table, and then she asked him some questions.
When she found that Liang Chengcai was really good at answering the questions, she nodded in satisfaction.
“You have a good grasp of it.”
“You can start with the vertical multiplication.”
As Lin Xiaoyue spoke, she taught Liang Chengcai how to do vertical multiplication.
Liang Chengcai marveled at the ingenuity and magic of the algorithm.
He could already recite the multiplication table proficiently, so it was not a big problem for him to learn the vertical form of the multiplication table. He quickly mastered it.
“Next, there are three properties of multiplication. The commutative property, the a.s.sociative property, and the distributive property.” Lin Xiaoyue continued.
The more he learned, the more amazed Liang Chengcai was.
When it was lunchtime, they almost forgot to eat.
He was still concerned that Lin Xiaoyue was hungry, so he asked the kitchen to send some food over.
While eating, Liang Chengcai suddenly remembered the question that Lin Xiaoyue left for him a few days ago. It was the question that required him to sum from 1 to 100.
“Ms. Lin, you said last time that you would tell me the answer to the sum of 1 to 100 after I finished learning multiplication. Can you tell me now?” He was really curious and wanted to make sure that he had not made a mistake.
“What’s your answer?” Lin Xiaoyue looked at Liang Chengcai with a smile.
“5,050.” Liang Chengcai reported the number.
Lin Xiaoyue nodded, “that’s right.”
“How do you calculate it?” She asked Liang Chengcai.
“Using the a.s.sociative property of addition. After I calculated the result, I used an abacus to verify it.” Liang Chengcai said, embarra.s.sed.
Lin Xiaoyue smiled.
“Have you thought about using multiplication?” She looked at Liang Chengcai with a smile.
Liang Chengcai paused.
After thinking for a while, he shook his head.
What did it have to do with multiplication?
“Going from 1 to 100 is equivalent to going from 0 to 100. What is the sum of the first and the last number?”