Grade Two Mathematics Huanggang Small Champion Volume I Standard Volume
First, I'm good at verbal arithmetic. (10)
4? 4= 28+4= 8? 4= 54+8= 3? 9=
20-4= 18+22= 1? 2= 7? 2= 36+9=
64-36=45- 13= 2? 4= 6? 3= 7 1-7=
9? 4=27+73= 2+ 17= 2? 8= 80-40=
Second, the vertical column calculation (12 points)
78+2 1﹣24= 35+29+ 15=
100﹣26﹣58= 64-36+27=
3. Fill in the blanks happily (32 points, 0 and 5 points for each blank)
1.36 angle = () yuan () angle 8.9 points = () points 6 yuan = () angle.
2. Fill in the box? & lt？ 、? & gt？ Or? =? .
3+3+3+3〇3? 4 5? 5〇5+5 8? 4〇4? 9 3? 7〇7? three
3. Fill in the box? +? 、? -? Or?
26 6=20 5 3= 15 40= 10 30 8 4 =32
4. Complete the formula and write two multiplication formulas.
Four () twenty-eight five () forty () nine twenty-seven.
?
() 683 () 12 () 945
?
?
5. 1 can be changed to () or ().
6.4 +2+1 = () yuan
7.3? 6 is pronounced as (), which means that () is added, or () is added, which means that multiplication is () or ().
8. Count 5? Six six? 5 o'clock, the formula used is ().
9. The units of RMB are (), () and (). Two fifties are () yuan, four fives are () yuan, and three twenties are () yuan.
10. In life, the common translation phenomena are () and rotation phenomena are ().
1 1. A cat has () legs, and a cat has () legs.
12. Horizontally, each line has (), * * has () and * * has ().
Vertically, each column has (), * * has () columns, and one * * has ().
13. Find a rule to fill numbers.
① 2、4、6、( )、( ) ② 4、8、 12、( )、( )
③ 45、40、35、( )、( )、( )
Grade two mathematics Huanggang volume multiple choice questions
1.8 3 and 38, the result is ().
A, eight big B's, the same big C's, and three big B's.
2.4 times () is 4.
a、0 B、2C、 1
3.32 & gt( )? 6. The maximum value in brackets is ().
a、5 B、4C、6
4. use 4? 6 equal formula is ()
a、4？ 5 B、3？ 8 degrees Celsius, 6+4
5. In the third-order equation? 6+6=□? 6. Fill in a few in □.
a、2 B、3 C、4
Fourth, look at the picture (14 points)
Verb (abbreviation for verb) I will solve this problem. (***27 points)
1. There were five children, and everyone ate three.
(1) How many bananas did Yi * * eat? (3 points)
How many bananas are left in the basket? (3 points)
Naughty goes to the mall to buy stationery, please help him calculate.
45 yuan 2 yuan 9 yuan 7 yuan
How much does it cost to buy four pencil boxes? (3 points)
(2)20 yuan can buy 3 boxes of colored pens. Is that enough? (3 points)
Please ask another math question and try to answer it. (4 points)
3.？ Telephone? Tape recorder p toy car&; book
42 yuan 80 yuan 34 yuan 29 yuan
How much is a tape recorder more expensive than a book? (3 points)
Xiaoming paid the salesman 100 yuan and bought a toy car and a book. How much should he get back? (4 points)
How much does it cost Xiao Ming to buy a phone and a toy car? How to pay? Write down two payment methods. (4 points)
An Analysis of Mistake-prone Problems in Grade Two Mathematics
1. Grandma is 63 years old and Xiao Fang is 7 years old. How old is grandma than Xiao Fang? 36-7=29 (years old) Causal analysis: If 63 is regarded as 36, it means that reading (copying) is wrong.
There are three classes in Grade Two. Class 2 has five more people than class/kloc-0 and class 3 has three more people than class/kloc-0. The number of students in Class Three is the least. Error analysis: the relationship between quantity and size cannot be correctly understood.
3. Daqing shot 135 ball, Xiaoqing shot less than Daqing, Xiaohong shot more than Daqing. 1) How many photos can Xiaoqing take at most? 135- 10=225 (pieces) 2) What is Xiaohong's minimum number of shots? 135+10 =145 (piece) Cause analysis: can't understand it accurately? Most? With what? At least? Meaning of.
4. To do the addition formula, Xiao Ming regards 6 in one plus digits as 9 and 1 in ten digits as 7 to get 604. The correct number is (588).
Error analysis: I don't understand that the numbers that are misread by one digit and ten digits respectively are actually redundant numbers, but directly subtract 16.
There are three ropes 60 meters long, one of which is 5 meters longer than the shortest one and 5 meters shorter than the longest one. How long is the longest one? What is the shortest meter? (This is entitled Additional Questions for Examination Paper) The longest is 60 meters and the shortest is 5 meters. Cause analysis: suppose three ropes are the same length, 60? 3=20, longest: 20+5=25, shortest: 20-5= 15.
6. Each sling is 5 meters long. Is it enough to cut a 42-meter rope into eight slings? 43? 5=8 (root) 3 (meter) is not enough. Cause analysis: If 42 is regarded as 43, the algorithm is correct and the conclusion is wrong.
There are 60 people in the class, of whom boys are twice as many as girls. Do you know how many boys and girls there are? Cause analysis: This is a sum multiple problem. You will understand after reading the third grade.
8. The supermarket is going to use it to attract customers? 2 boxes of milk and 3 boxes of yogurt? How many gift boxes can you make at most? Product name and quantity: 18 boxes of milk, 24 boxes of yogurt can be made into 20 gift boxes. Error analysis: First, two boxes of milk can be divided into nine parts, and three boxes of yogurt can be divided into eight parts. Only a few combinations can be selected, and the answer should be eight gift boxes. Peanuts and candy can be used in combination with the actual operation.
9, 18 a bottle of calcium tablets, Xiaohui insists on eating it every day, once in the morning and three tablets each time. How many days can a bottle of medicine last? 18? 3=6 (days) Error Analysis: Don't understand? Once in the morning, three tablets at a time? What is the multiplication meaning contained in 2? 3。
10. A car has four wheels and a spare tire. Now there are 38 wheels. How many such cars can you load? How many wheels are left? 38? 4=9 (vehicle) 2 (individual) Cause analysis: failed to understand correctly? There are four wheels and a spare tire on the car? Training to improve students' reading comprehension.