Kids’ memorizing multiplication tables（乘法表）may help them to be better mathematicians, according to the scientists.

After spending a certain amount of time practicing maths, kids can put away the calculator. They don’t even need to use their fingers. They simply know the answers to addition, subtraction, and multiplication facts. The more quickly kids can recall basic facts, the easier it is for them to solve problems at h_______ level.

Scientists recorded（記錄）the brain activities of 28 students for the study, e_______ when the students did maths calculations without the help of a calculator, pen or paper. A calculation — three plus four equals seven, for example — flashed on a screen. The students should say if the answer was right or wrong.

Rather than counting, or writing on the paper, the students pulled the answers from m________. It’s as if（就像）the answers to basic addition, subtraction, and multiplication problems are kept in a long-term storage（儲存）area in the brain.

When kids have basic maths facts memorized, the brain has space to learn more difficult maths. As kids got o_______, their answers became quicker and more accurate.

Scientists hope to use this research to d_______ new ways to help kids learn maths at all levels. One way for students is to quiz themselves in different orders — solving five times three b_______ five times two, for example. Mixing up the order keeps the brain active. Keep these drills up, and you may be a maths whizz in no time.

1.h______

2.е__________

3.m___________

4.o________

5.d_________

6.b________

練習冊系列答案
相關習題

科目：初中英語 來源：重慶市2019--2020學年九年級上學期期中英語試卷 題型：單選題

He asked me__________.

A.whether I find out the sender of the money

B.whether did I find out the sender of the money

C.whether the sender of the money found out

D.whether I found out the sender of the money.

查看答案和解析>>

科目：初中英語 來源：重慶市2019-2020學年八年級上學期期末英語試卷 題型：閱讀單選

People like different colors. Girls like pink or purple. Boys usually like blue or brown. Why do people like different colors? Do you want to know the secrets of colors?

People like different colors because of their cultures and countries. For the Egyptians (埃及人) green is the color that shows the hope and joy of spring. For Muslims (穆斯林), green means heaven (天堂). Red is a symbol of good luck in many cultures. In China, children are given money in a red envelope. Chinese people think red can bring good luck to them in the New Year. In some countries, blue is a symbol of protection. Greek people often wear blue necklaces in order to protect themselves.

Choosing colors also has something to with their bodies’ reaction toward them. Green is said to be the most relaxing color. It can help people feel relaxed. Red can make a person’s blood pressure (血壓) go up and improve people’s appetites (胃口). Many restaurant owners will decorate(裝飾)their restaurants with red things. Red is also a color that can catch a person’s eye easily. That is why some shopping websites always have red “BUY NOW” buttons (按鍵). Blue is another calming color. Unlike red, blue can make people eat less. So if you want to lose weight, using blue bowls and plates may be helpful.

1.Why do many restaurant owners like to use red things to decorate their restaurants?

A.Because red can bring hope and joy.

B.Because red and bring them good luck.

C.Because red and make people cat more.

D.Because red can catch people’s eye easily.

2.If you want to eat less, you can use ________ bowls and plates.

A.blue B.green C.pink D.red

3.Which of the following is mentioned (提及) in the text?

A.Why the Egyptians like red and blue.

B.What Chinese people think of black.

C.Why shopping websites have red “BUY NOW buttons.

D.What the most popular colors for young people are.

4.What’s the best title for the text?

A.Teenagers’ favorite colors. B.Colors and their symbols.

C.Colors and cultures. D.The secrets of colors.

查看答案和解析>>

科目：初中英語 來源：重慶市2019-2020學年八年級上學期期末英語試卷 題型：單選題

It is said only three ____ of the students in our school ____ TV every day.

A.percent; watch B.percents; watches

C.percents; watch D.percent; watches

查看答案和解析>>

科目：初中英語 來源：河南省蘭考縣2019-2020學年七年級上學期期末英語試卷 題型：閱讀單選

Hello! My name is Tom. I like to go out for a picnic with my parents on Sundays. I like fish and vegetables very much. My father is a driver. He likes meat and fish a little. My mother is an office worker. She likes apples and vegetables very much. But she doesn’t like bread and hamburgers at all. So we usually take some fish, meat, vegetables and apples with us. Then my father gets water. My mother likes to cook for us and she cooks fish, meat and vegetables. I fly a kite. We sing some songs. We are all very happy.

根據(jù)短文內(nèi)容，選擇最佳答案。

1.Tom likes to ______ with his parents.

A.go shopping B.go out for a picnic C.go to the zoo D.sing some songs

2.What does Tom’s father do?

A.An office worker. B.A doctor. C.A driver. D.A cook.

3.What does Tom’s mother like eating?

A.Fish and vegetables. B.Meat and fish.

C.Apples and vegetables. D.Bread and hamburgers.

4.Tom’s family take _______ with them.

A.vegetables, fish, meat and apples B.vegetables, fish, meat and bread

C.vegetables, fish, meat and hamburgers D.vegetables, fish, bread and hamburgers

5._______ gets water.

A.Tom B.Tom’s brother C.Tom’s father D.Tom’s mother

查看答案和解析>>

科目：初中英語 來源：牛津上海版英語八年級第一學期Unit 4 Numbers（B）同步練習（含聽力） 題型：單選題

Mrs Wang couldn’t fall asleep _______ her son arrived home.

A.until B.if C.because D.so

查看答案和解析>>

科目：初中英語 來源：牛津上海版英語八年級第一學期Unit 4 Numbers（B）同步練習（含聽力） 題型：單選題

_______ tourists visit Hong Kong each year because Hong Kong is a “Shopping Paradise”.

A.Thousands B.Thousands of C.Thousand of D.Thousand

查看答案和解析>>

科目：初中英語 來源：黑龍江省富錦市2019-2020學年九年級上學期期末英語試卷 題型：講稿

寫作

話題作文: 臨近中考，作為初三學生的你們壓力越來越大。學校組織一次以“ How to Deal with the Stress”為題的演講比賽。請根據(jù)下面的思維導圖寫一篇演講稿，介紹你緩解壓力的方法。

How to Deal with the Stress

a health body , more energy to study, clam down（冷靜）, others’ help, do more sports, go to bed early, listen to some light music , have a talk with……

提示詞: entrance exam入學考試; more or less 或多或少more or less

___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

查看答案和解析>>

科目：初中英語 來源：江蘇省南京市南師江寧分校2018-2019學年九年級下學期開學考試英語試卷 題型：閱讀單選

Students aiming to enter Tsinghua University(清華大學) this year had better have the ability to swim or prepare to learn swimming and pass a swim test since the well-known university will not present the certificate(證書) to their students if they cannot swim.

On Monday March 27th ，Beijing Daily News reported that new students at Tsinghua University will have to take swimming courses. If they fail in the swimming test during their study, they won't receive their degrees if they cannot swim before their graduation(畢業(yè)).

Why does the university relate the swimming ability with degrees? Liu Bo, the head of the Sports Science and Physical Education, said, "As a survival skill, students can keep themselves safe from danger when they are in water. Students can also benefit a lot from swimming, since it is helpful in improving students' physical abilities as a water sport."

Whether it's summer or not, swimming can keep yourself up, energetic, and active. Regular swimming is a good way to keep people healthy. Swimming also does the job of making your skin soft, younger, and healthier. Playing with water makes people feel young, and it washes away all the negative feelings that you have. People can also get pleasure from swimming.

Moreover, it also relaxes people’s mind in some ways. Now a great deal of people suffer from stress coming from study, work, family, and other aspects of life. According to surveys, 74% of people say that the feeling of stress has greatly reduced, and in fact, some of them did not feel the pressure（壓力）when they are in the water.

1.If students aim to enter Tsinghua University this year, what should they do?

A.They must work hard to get high marks. B.It is a good idea to get a certificate on their own.

C.They had better make themselves able to swim. D.They should ask for help from Liu Bo.

2.What does the underlined word “it” in Paragraph 4 mean?

A.improving students' physical abilities B.keeping people healthy

C.making your skin soft D.playing with water

3.How may most of people feel when they are in the water?

A.Tired. B.Relaxed. C.Surprised. D.Confident.

4.What do we know about swimming from the passage?

A.Liu Bo thinks having the skill of swimming is unimportant.

B.Swimming reduces students' physical abilities while swimming.

C.People can achieve pleasure from swimming.

D.Students in Tsinghua University can receive their degrees if they cannot swim.

5.This passage is probably from _________.

A.a novel B.a newspaper C.a science report D.a fashion magazine

查看答案和解析>>

同步練習冊答案