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:?
Count? Type:?
Subtraction problem:
Count? Type:?
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
What kind?
Only count 20? 30? 46
How many chickens are there in Abby Mallard?
=? ( )?
② How many chickens are fewer than geese?
=? ( )?
(3) Ask mathematical questions. Column solution
Question:?
Answer: =? (? )
(6) The store will deliver 20 pieces first? , and shipped 80, store * * * how many goldfish? ?
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(7) There are 80 schools? And then what? , among them? There are 30. How many?
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(8) Mom bought 30? I ate some and there were 20 left. How much did I eat?
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(9) There are 40 cars in the bus station? 20 vehicles were driven away for the first time, 10 vehicles were driven away for the second time, and how many vehicles 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, and there are 20? , 10? What's left? ,? How many?
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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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