"Baba, my little pig is full, I can't fit it!"

On the morning of the second day after returning from her hometown, Xixi ran downstairs on her feet, and when she was still on the stairs, the little girl's energetic cry reached the living room.

This is the first big thing Xixi did after coming back - to store her New Year's money in her little piggy bank!

In previous years, Murphy robbed the little girl's big bills halfway, and only left dozens of yuan of change for Xixi, although Murphy didn't spend Xixi's money, after she took it, she saved it into a separate bank account for Xixi.

However, not this year! Xixi, who is already six and a half years old, has sprouted a little self-awareness!

Although she is still very dependent on her parents, the little girl has begun to consciously divide her money and her own things clearly, so when she was in her hometown, when Murphy said that she wanted to take away her New Year's money, she refused to give it to her mother!

"You're still young, it's not safe to carry so much money on you, what if you lose it?" Murphy scared her, "Or, what if the big bad wolf hears that you have so much money and robs you halfway?"

Xi Xi was not so stupid, she grinned and said, "The big bad wolf won't rob money!

However, what her mother said about the danger is also reasonable! Xixi is also worried that she will accidentally lose so much money!

Last year, because of the construction of the road, the uncles and uncles in the village made a lot of money, and the red envelopes they gave to Xi Xi and Xiao Yu were much thicker - after all, this was Yang Yi's child who gave them a great favor! (Of course, Yang Yi gave their children only a lot more money.) ）

With so much money, Xixi is not at ease to take it herself.

What to do?

Xixi finally decided to entrust her little money to her father and let her father carry it for her!

Like, it's no different from letting mom take it?

But Xixi trusts her father! The little girl believes that her father will not take her money and not return it, but her father has not failed her trust, and when she returns home, she takes out all Xixi's red envelopes and asks her to save them herself.

However, the problem now is that Xixi's piggy bank doesn't know when it's filled with money, and after Xixi stuffs a few bills into it, it can't fit anymore!

……

"The piggy bank is full?" Yang Yi looked at Xixi and nodded her little head like a chicken pecking rice, and said with a smile, "Then what are you going to do? Dad will buy you a piggy bank again? Or shall we take out a piece of the money in it and go to the bank, and Dad will deposit it for you?"

Xixi now has three piggy banks in the room, all of which are the pocket money she has saved.

"Why do you want to go to the bank to deposit money?" the little girl couldn't sit still, her two little arms propped up on the sofa, swinging around like a swing, holding her energy, and asked her father curiously.

"Because you keep your money at home, no matter how young you are, it's still so much, if you keep it in the bank, then the bank will give you interest, if you keep it for a long time, when you take it out in the future, it will be much more than if you put it at home!" Yang Yi smiled and said to Xixi.

Although keeping money in the bank is not a good way, it is indeed the most suitable way for children to manage money at this stage.

"Will there be more?" Xixi couldn't help but stop moving, and opened her little mouth in surprise to look at her father.

Yang Yi simply took the big whiteboard he usually used to teach Xi Xi at home, calculated it for Xi Xi, and used intuitive numbers to show the little girl how much extra money she could gain after three years with a deposit of 1,000 yuan and a fixed deposit in the bank for three years.

It just so happens that this is also a small math class for Xixi.

"For three years, the interest given by the bank is 2.75 percent, which means that 100 yuan can have two yuan and 7 cents and 5 cents per year. So if we have 1,000 yuan, how much interest can we get every year?" Yang Yi asked with a smile.

Xixi had just come into contact with the rules of multiplication and division in mathematics, and she had not yet learned to use them flexibly, so the little girl blinked her long eyelashes and muttered "a thousand...... A thousand ......", but I just couldn't figure it out.

"Isn't a thousand yuan a hundred yuan a ten?" Yang Yi drew the image of a 100 yuan bill on the whiteboard with a few strokes, and then wrote a "X10" next to it.

Xi Xi nodded her little head busily, this is more intuitive, and she understood it at once.

"Then, a thousand yuan, a year's interest, is also 2.75X10, which is twenty-seven yuan and five cents. Right?" In order to let Xi Xi understand this multi-digit multiplication operation, Yang Yi also decomposed the process of the operation and wrote it down for Xi Xi to see.

Xi Xi watched intently, forgetting to speak, and now Xi Xi has also received a lot of new information, and her head seems to be a little insufficient.

After calculating the interest of 1,000 yuan for three years for Xixi again, Yang Yi gave a number: "Eighty-two .5, that is to say, you will deposit 1,000 yuan in the bank, and after three years, if you go to withdraw it, you will have more than 80 yuan!"

"Wow!" Xi Xi held her two little hands in front of her, little stars popped out of her eyes, and she exclaimed quietly, I don't know if she thinks that this extra money is a lot, or if she thinks that her father is very powerful.

Of course, Yang Yi can't look down on the bank's small interest, but Xixi doesn't have so many concepts, she only thinks that her money can be increased by putting it in the bank, which is indeed a good thing!

"Baba, then, then I don't want a piggy bank, I want to save all the money!" the little girl came back to her senses from the complicated mathematical operation, happily took her father's hand, and said eagerly.

"Then we have to take out all the money first!" Yang Yi smiled and said, "Calculate how much money you have now!"

It's better to choose a day than to hit the day, Yang Yi went upstairs, and together with Xixi, took down her three pink piggy banks, Yang Yi had one in one hand, and Xixi, who was following behind his father, was also holding one himself, and he was also happily holding a small bag of money - this is her New Year's money this year.

Beginning to work, they opened the belly of the piggy bank on the large table in the side hall and took out all the money inside.

I have to say that Xixi has indeed saved a lot of money in recent years, although some of it has been deposited in the bank by Murphy, and the scattered banknotes taken out of the piggy bank of the three little pigs have been piled up into a small mountain.

"That's a lot!" Look, it's a lot!" Xixi excitedly stepped on the chair, waving her little hand to her father, and giggling.

Yang Yi just smiled and said nothing, most of Xixi's money is scattered pocket money, one yuan, five yuan accounts for the majority, and there are some "big bills" - ten yuan, twenty yuan, and fifty yuan, which does seem to be "much", but in fact, it is ......

"How do you count it?" Yang Yi didn't plan to finish everything for Xixi, he smiled and guided, "First of all, you have to sort out all the money first, for example, let's put a hundred yuan banknote in this piece, and put fifty yuan in this piece...... You have to flatten each one and make it neat, so that it will be easier to count them later!"

Xixi listened attentively, although her father didn't help her count, Xixi felt that she was still very motivated to sort out these small money.