First, solve the problem.
1, pulled out 50 radishes and 20 radishes. How many radishes did two rabbits pull out?
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There are 90 story books in the small library, and 40 have been lent out. How many books are left?
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3. There are 48 people in the school choir, including 20 men and how many women?
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Step 4 buy toys.
42 yuan 40 yuan 28 yuan 30 yuan
(1), Xiao Ming buys one after another, one * * *, how much is it?
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(2) Xiaoli bought a toy from 50 yuan and took it back to 20 yuan. What toys did she buy?
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(3) Put forward a math problem with addition and subtraction respectively and answer it.
Addition problem:
Formula:
Subtraction problem:
Formula:
Xiaoming read a book, he read 78 pages instead of 20 pages. How many pages are there in this book?
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6. Mom has money from 83 yuan. How much money is left to buy books and go to 30 yuan?
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7. There are 36 books on the shelf. Take some. There are nine books on the shelf. How many books did you take?
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8. There were 45 cars in the parking lot, but by noon there were 30 fewer. How many cars are there in the parking lot?
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9. After some cars were driven away from the parking lot, there were still 12 cars left, and 20 more cars were driven away than the rest. How many cars did you drive away?
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Second, use mathematics.
( 1)、
(2)、
How old is grandma than Xiaoming?
= ( )
(3)、
How many trees have Class Two planted? = ( )
(4) The experimental primary school held a sports meeting.
= ( )
(5) Xiaohong's livestock
kind
Only count 20 30 46
How many chickens are there in Abby Mallard?
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② How many chickens are fewer than geese?
= ( )
(3) Ask mathematical questions. Column solution
Question:
Answer: = ()
(6) The store will ship 20 first and then 80. How many goldfish did this store ship?
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(7) 80 schools, including 30 schools. How many/much?
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(8) Mom bought 30, ate some, and there were 20 left. How much did she eat?
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(9) There are 40 buses in the bus station. Twenty buses were driven away for the first time and 10 for the second time. How many buses were driven away for the second time?
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(10) Xiaojun is 7 years old this year. 10 How many years will it be?
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(1 1) The farm * * * has 80 cats, including 20 cats, 10 cats, and the rest is, how many cats are there?
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(12) One schoolbag, one in 30 yuan, and one in the pencil case 15 yuan. How much does it cost to buy a schoolbag and pencil box?
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(13) How much is it more expensive to buy a basketball 55 yuan and a football 40 yuan?
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(14) There are 27 pots of chrysanthemums and 9 pots of Chinese rose in the park. How many pots are Chinese rose less than chrysanthemum?
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Can you ask more questions? Ask questions and answer them.
Question:
Answer:
Third, mathematics in life
(1) Mom bought some, ate 20, and there were 30 left. How much did she buy?
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(2) There are 20 senior one students, including girls 10, and how many boys?
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(3) The teacher gave the students 30 Chinese books and the same number of math books, leaving 37 books. How many exercise books does the teacher have?
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(4) 12 planes flew away for the first time, 6 planes flew away for the second time, and how many planes flew away for the second time?
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(4) Xiao Mingyou 14. I ate six, as much as Xiao Yun. How many are there in Xiaoyun?
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Xiaoming has 30 books, Xiaohong has 35 books, and Xiaohong has more books than Xiaoming.
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(8) A car carries 68 cases in the morning and 60 cases in the afternoon. How many boxes are shipped in the afternoon less than in the morning?
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(9) At the airport, 25 planes flew away for the first time, 20 planes flew away for the second time, and how many planes flew away for the first time? How many fewer planes left the second time than the first time?
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(10) Li Li uses colored paper to make flowers. She has used 45 pieces, and still needs 10. How many colored papers does Li Li need?
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(1 1) There are 24 boys and 20 girls in Class One, Senior One. How many students are there in Class One, Grade One? How many girls are less than boys?
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(12) Xiaoying jumps 89 times, Xiaoming jumps 80 times, and how many times does Xiaoming jump like Xiaoying?
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(13) Xiaoyun blew 23 balloons, five of which were broken, and several others were not.
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(14) Xiaoqing brought 18 used batteries, Xiaoyun brought five more batteries than Xiaoqing, and Xiaoyun brought several used batteries.
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Teacher Wang made some flowers for Mingming and Dongdong. Clearly get 16 flowers, Dongdong get 9 flowers. How many flowers did Miss Wang make?
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(16) There are 26 goats and 9 sheep on the hillside. How many sheep are less than goats?
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Fourth, solve life problems with mathematics.
1, car 35 yuan building block 26 yuan doll 12 pistol 6 yuan
(1) What three toys can I buy with 50 yuan money?
(2) How much is a pistol cheaper than a doll?
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(3) How much did Daming pay when he bought the car, and the salesman got it back to 5 yuan?
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Xiaojun has just enough money to buy a car. Guess, he has at most () 10 yuan.
Before school starts, mother takes Xiaohong to buy stationery and new clothes. The price is as follows:
20 yuan 8 yuan 30 yuan 25 yuan
How much does it cost to buy a dress and a pair of trousers?
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How much is the schoolbag more expensive than the pencil case?
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Mother brought 50 yuan money and bought a schoolbag. How much is left?
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(4) If mom brings 60 yuan money, she can buy the above three things.
Which three pieces? List formulas and calculate them.
There are 52 students in Grade One who go to the park by two cars. A car has already carried 30 students. How many people will take another car?
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4. Light light blue has 8 yuan money. How much does light light blue need to buy an album of 12 yuan?
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There are 52 boys and 40 girls in the school track and field team. How many girls are less than boys? □○□=□( )
6. Little red cut the five-pointed star, the first time cut 10, and the second time cut as much as the first time. How many times have you cut it?
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7. Xiaohua took 30 photos for the first time. How many shots did he take twice? Say the missing condition first, and then work it out. )
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8、
(1), how much was cut by Yi * *?
= (piece)
(2) There are 35 peaches.
How much is left?
= ( )
9. Trees planted in our school:
There are 30 banyan trees, 55 pine trees and 40 poplar trees.
(1) How many banyan trees are fewer than pine trees?
(2) How many pines are there than poplars?
10, vision test.
12, a * * * has 15 lucky dolls.
(1) How many are there on the right and eight on the left?
(2) How many are there on the left and seven on the right?
13、
Xiao Qiang Baba
10 years, how old will dad be than Xiaoqiang?
14, 32 first-grade choirs. (Guess and tick "√" under the answer you think is appropriate)
How many people may be in the art group? How many people are there in the science and technology team?