Where did 50 Jin of grapes go? The bear felt strange because he didn't move all the way. Have the grapes been stolen? The little squirrel was very anxious about 50 kilograms of grapes, so they had to let the little monkey know about it.
Little monkey is an experienced detective. He took some grapes from the basket for sampling and testing, and knew that the water content of grapes was 98%. He immediately asked Bear, "When you bought grapes in Xinjiang, what was the water content of this grape?"
"I remember this very clearly." Xiong said brightly: "At that time, the owner of the vineyard praised his grapes as the freshest big grapes with a water content of 99%."
Hearing this, the little monkey understood everything. He told the bear and the squirrel, "You have a lot of grapes!" "
The little squirrel was anxious and said, "How is this possible?" The water content of grapes changed from 99% to 98%. Grapes will lose water, but not so much, right? "
The little monkey said, "Calm down and think about it. How many kilograms of water does the original 100 kg grape with water content of 99% contain? "
"Isn't it easy to calculate?" Little bear thinks the question raised by the little monkey is too simple. "100× 99% = 99 (kg). It turns out that 100 kg of grapes contain 99 kg of water. "
"That's right." The little monkey then asked, "How many kilograms of water does this 50 kilograms of grapes with a water content of 98% contain now?"
The little squirrel said, "This is easy to calculate. 50× 98% = 49 (kg), and 50 kg of grapes contain 49 kg of water. "
At this point, the bear and squirrel suddenly realized that they had a false alarm. The water content of grapes has changed from 99% to 98%, which seems to have only changed 1%, but the original 100 kg grapes can only weigh 50 kg now. Lost 50 kilograms of water, but not a grape!
A long time ago, the square was considered an important number. Her importance is still recognized by everyone today, because there are so many things made with her as a model.
No matter who you meet, Square always likes to praise himself: "Oh, how beautiful I am! What a symmetrical figure! The sides are the same, and the angles are the same! If I draw a vertical line in the center of my body and then fold my body in half along this line, it will fit perfectly together. Do you think there will be a more perfect person in the world than me? "
Square walked in the street all day. After a long time, she began to feel lonely. Nobody talks to her, nobody plays with her. So Square decided to look for relatives.
Fang thought, if I see my relatives, I will definitely recognize them, because there is no doubt that he should be similar to me in some places.
At this time, she saw a new figure coming from the opposite side, and Fang Fang quickly stepped forward to say hello: "What's your name?" The new figure replied, "People call me rectangle." The square asked again, "Are we relatives?" The rectangle said, "I want to know this, too." When I went out, my mother told me that the graphics in our home should be somewhat similar. "
Hearing this, the square quickly started a dialogue with the rectangle. In a short time, they found the same point. The four corners are right angles, the opposite sides are parallel and equal, and the diagonal lines are equally divided. Now they are very happy.
Square and rectangle coexist for a long time. One day, they met a new character. The new figure greeted them and said, "I have been looking for you everywhere. Today, I finally found you."
The square and the rectangle asked in unison, "What's your name?"
This new graphic says, "My name is trapezoid. We are both quadrilateral family! "
Fangfang and Rectangular said disapprovingly, "You don't look like us." The trapezoid said, "well, you two are rectangles, and I'm not a rectangle." However, you two are quadrangles and I am also quadrangles, but you two are close relatives and I am your distant relative, haha ... "
The squares and rectangles were also amused by the trapezoidal humor, and they recognized their loved ones happily.