1. Students should make 10 lanterns. Eight lanterns have been made. How much more do they have to do? Six butterflies flew away from the flowers, and five others flew away. How many flew away twice?
There were 15 planes at the airport, and three of them flew away. How many planes are there at the airport now?
Xiaoping planted 7 pots of safflower and the same amount of yellow flowers. How many pots of two kinds of flowers?
The school used to have 5 bottles of glue and bought back 9 bottles. How many bottles are there now?
6. Xiao Qiang has 10 apples. I ate seven apples. How many more are there?
7. There are 13 cars in the passenger station, and three cars have already left. How many cars are there?
8. Children make paper-cuts with 8 pieces of red paper and the same amount of yellow paper. How many sheets of paper did they use?
9. There are 9 horses in the racecourse, and 5 more will come soon. How many horses are there on the racetrack now?
10, the store has 15 fans, and 5 fans have been sold. How many fans are there now?
1 1. I calculated 100 math problems in the morning and 2 1 math problems in the afternoon. How many more math problems do you calculate in the morning than in the afternoon?
12. There are 72 girls and 8 boys in the library. How many boys are less than girls?
13. There are 20 big monkeys and 30 small monkeys in the zoo. How many little monkeys are there than big monkeys?
14. School football 10, basketball 16. How much less is football than basketball?
15. There are 40 pots of orchids and 60 pots of chrysanthemums in the garden. How many pots of orchids can be planted as many as chrysanthemums?
16. Mom bought 18 red buttons, 18 white buttons and 8 black buttons.
(1) How many red buttons are there than white buttons?
(2) How many black buttons are there than white buttons?
17, Xiaohua made 20 envelopes. Liang Xiao made six more envelopes than Xiaohua. How much did Liang Xiao do?
18, there are two bookshelves. There are 16 books on the first floor. There are 8 more books on the second floor than on the first floor. How many books are there on the second floor?
19. Mom bought 16 apples. There are 24 more pears than apples. How many pears are there?
20. There are 30 roosters in the feeding group, and there are 48 hens more than roosters. How many hens are there?
2 1, 84 people went for an outing in grade four, 8 people went for an outing in grade five, and how many people went for an outing in grade five?
22. There are 28 female students in the choir. There are four fewer boys than girls. How many male students are there?
23. Xiaohua has 32 white sheep, and the number of black sheep is less than that of white sheep 12. How many black sheep have you raised?
24. The students took part in labor and picked 40 baskets of cucumbers. White melons are picked less than cucumbers 18. How many baskets did you pick?
25. Xiaoming swatted the ball for the first time, 35 times, 7 times less than the first time. How many times was the second time?
26. Xiaoying made 30 red stars, and 12 yellow stars are less than red stars. How many yellow stars did she make?
27. The school bought 37 boxes of white chalk and 8 boxes of colored chalk. How many boxes of chalk did it buy?
28. The school bought 45 boxes of white and colored chalk, including 8 boxes of colored chalk. How many boxes of white chalk?
29. The school bought 37 boxes of white chalk and 8 boxes of colored chalk. How many boxes of colored chalk are less than white chalk?
30. The school bought 8 boxes of colored chalk, and white chalk bought 29 boxes more than colored chalk. How many boxes of white chalk?
3 1, coat: 50 yuan pants: 30 yuan shoes: 19 yuan.
(1) How much does it cost to buy a pair of pants and shoes?
(2) Xiaohua wants to buy a coat, a pair of trousers and a pair of shoes, 100 yuan. Is that enough?
32. Schoolbag: 49 yuan watercolor pen: 10 yuan ink: 3 yuan
(1) How much is the schoolbag more expensive than the marker?
(2) How much is ink cheaper than watercolor pens?
(3) What other questions can you ask? And answer.
33. Mother Rabbit: I collected 35 radishes. Rabbit: I have 30 radishes.
(1) How many more radishes did the mother rabbit receive than the baby rabbit?
(2) How many radishes does the rabbit take less than the mother rabbit?
Bus: 30 CMB: 45 bus: 40 bus
(1) How many cars are there than buses?
(2) How many buses are there in China?
(3) What other questions can you ask? And answer
In the skipping competition, Xiaoming jumped 20 times, Xiaodong 30 times and Xiaoli 46 times.
(1) How many times does Xiaoming jump less than Xiaodong?
(2) How many times does Xiao Li jump than Xiao Dong?
Math summer homework for the first grade in the second primary school
1. Fill in the blank: ①52 contains () tens and () ones.
(2) the number consisting of four tens and eight ones is ().
(3) A two-digit number, one digit is 5, the ten digit is 2, and this number is ().
④ Fill in or = in brackets.
32()23 58()68 96()88 59()6 1
66()66 87()78 1 yuan () 10 angle
6 Angle () 59 points 19 Angle () 2 yuan 2 Angle () 1 9 points.
⑤ 30 angle = () yuan 40 minutes = () angle
25 Angle = () Yuan () Angle 3 Yuan 6 Angle = () Angle.
⑥ Use words or drawings to express.
The surface of the blackboard is () shaped.
The red scarf and the flying red flag are both ()-shaped.
Second, write the number directly.
16-8= 53-3= 60+6=
50+7= 87-7= 62-48=
48-39= 66-4= 72-9=
4+56= 95-6= 25+50=
60+30= 34+6= 60-3=
88-8= 85-70= 53-6=
35+30+5= 45-(5+3)=
60-(50-5)= 16+(45-5)=
1 yuan -8 angle = 5 angle +5 angle =
6 Angle +8 Angle = 8 Angle -3 Angle =
Third, the application problem.
1. The school bought 45 pieces of white paper and used 15 pieces. How many cards are left?
Math summer homework for grade three and grade one in primary school.
First, calculation.
(1) See who calculates correctly and quickly. 27+ 14= 72- 19= 43+30=
59+5= 70+8= 6+28=
5+34= 63-5= 24+60=
50+50= 72-6= 4+27=
46-40= 58-9= 68+5=
26+7-8= 9+ 19-7=
4+ 18+6= 55+30-7=
38+4-20= 9+46+8=
(2) Calculation by numerical formula
26+ 13= 73- 17=
42+6= 62-7=
63+29= 58-24=
Second, the window of knowledge.
(1).
1, 9 tens and 8 add up to ().
2. The numbers adjacent to 39 are () and ().
3, 6 yuan 7 Angle = () Angle.
1 yuan = () angle = () minutes.
4 and 28 are composed of () ten and () one.
5、 18+()& lt； 30. () You can fill in ().
6. Circle the appropriate number.
More than 30, less than 35, even. This number is
(3 1、34、36、30)。
7. Find a pattern.
40、36、30、24、()、()、()。
8. A 50 yuan dollar can be exchanged for (a) a 20 yuan and (a) 10 yuan.
(2) Draw a tick below what you think is appropriate.
(1) There are nearly 50 students in Grade Two. How many may there be in the second grade?
36 people 48 people 6 1 person
(2) There are 40 chickens, and the number of ducks is much less than that of chickens. How many ducks may there be?
43 35 15
(3) judgment.
1. Xiaohua has 30 story books, 7 of which are lent to Xiaoli. How much is left?
(1) 30–7 = 23 (Ben) ()
(2)30+7=37 (Ben) ()
Xiaohua lent Xiaoli 7 story books, and there are 30 left. How many florets were there?
(1) 30–7 = 23 (Ben) ()
(2)30+7=37 (Ben) ()
Third, choose the correct answer and tick ().
1, the number in units of 9 is ():
( 1)39()(2)93()
(3)29()(4)69()
2. Numbers greater than 75 and less than 79 are ():
( 1)57()(2)75()
(3)77()(4)87()
Xiaohong had to spend 80 cents on a pencil. Which of the following payment methods is correct?
(1) Pay 3 pieces of 20 points and 2 pieces 1 minute. ()
(2) Pay 8 yuan 1 angle. ()
(3) Pay 1 block 30 points and 1 block 50 points. ()
(4) Pay 1 piece 50 points, 1 piece 20 points, 1 piece 1 minute. ()
4. Scores higher than 50 are:
54-79()43+8()23+30()5+50()
4. Fill in the box (), =
78-8()78-50 35+50()35+5
49+4()49+40 57+7()60+4
48+6()52-8 23+7()2+26
Five, happy forest.
1, Xiaoming has money from 50 yuan. He spent 34 yuan on a schoolbag and 8 yuan on a story book. How much did Xiaoming spend?
There are many peaches on the tree. The little monkey picked nine, and there were 45 left. How many peaches are there on the tree?
3. There are 25 red goldfish and yellow goldfish, including 9 red goldfish. How many are there in Huang Jinyu?