Divide 12 ☆ into 3 parts on average, each part is (); 12 pieces ☆, every 4 pieces are divided into one piece, which can be divided into () pieces.
100cm = () m 27m-9m = () m
Draw a 3 cm long line segment, generally from the scale () of the ruler to () cm.
There are 7 days in a week, and 28 days are () weeks.
There are () corners in the picture on the right.
There are () right angles among them.
() How much can I fill in?
()×4 & lt； 26 6×()& lt； 32 68 >9×( )
Write four formulas with the following words.
4728 () × () = ()× () = ()
( )÷( )= ( )÷( )=( )
8. In the appropriate □
9. put ">" in ○. , "<, or" = ".
35÷7○6 8×6○48 7×7○47 40÷5○7
10. Fill in the blanks.
Finding the number of black rabbits is finding the number of () ().
The formula is ().
Second, calculation.
1.
2×9= 40÷5= 8× 1= 36÷9= 79-63= 2 1÷3= 5×4=5 3+20= 8×3= 25÷5=
6×9= 64÷8= 48+52= 7×7= 42÷7=
2. Column vertical calculation.
6×9= 72÷8= 65÷7=
26+45+ 17= 85-27+30= 7 1-(65-43)=
3. Calculate the following questions.
4×7+20= 2×2×4= 72÷9÷4=
60-(30- 15)= 6×7-30= 54+26-30=
4. Formula calculation
What is six times (1) 7?
(2) How many times is 32 4?
Third, draw pictures.
1. Draw a line 2 cm shorter than 6 cm.
2. Draw a right angle from the given starting point.
Fourth, the application problem.
1. The students cut flags. There are eight little yellow flags. The number of small red flags is three times that of small yellow flags? (Ask questions first, and then calculate in tabular form. )
2. Students in Grade Two 1 Class planted 6 rows of flowers with 8 trees in each row. How many trees have been planted in a row?
Kobayashi's family collected 7 pumpkins and 42 winter melons. What's the number of wax gourd?
There are 35 meters of white cloth. If you make one every 5 meters, how many can you make?
There are a group of students on the playground, including 7 boys and 7 girls. How many freshmen are there There are 43 students on the playground now. How many students are there? Fill in the blanks
Exercise of multiplication and division in the first volume of the second grade mathematics printed by Xi Shi Normal University.
1, △△○○○○○○○○○○○○○○○○○○○○○○○○○○○
2 and 42 have () 7.
3. Three eights are (), and six times nine is ().
40 is () times that of 5.
5,6× 9 = (), which means that () is (). This also means that () times () is ().
6,72 ÷ 8 = (), which means that there is () in (). It also means to divide () into () parts, and each part is ().
Second, oral calculation.
8×4= 32÷4= 4×9= 56÷8=
14÷7= 27÷3= 8 1÷9= 16÷2=
54÷6= 4×9= 35÷5= 3×7=
9×9= 6×8= 56÷8= 2×9=
3×9+3= 9÷9+ 1= 8 1÷9-9=
64÷8-4= 8×9-20= 14÷7+ 18=
2×4÷8= 30÷5×6= 72÷(2 1- 12)=
Third, vertical calculation.
54÷9= 8×7= 42÷6=
6×5= 56÷8= 20÷4=
Fourth, column calculation
1 what is 9 times of 5? How many fours are there in 2 and 28?
3. Divide 2 1 into three equal parts. How much is each part?
4. Both factors are 8. What is the product? 5. How much are three sevens?
How many times are 6 and 36 9?
Verb (abbreviation of verb) application problem
1, the canteen bought 24 bags of rice and 8 bags of flour. How many times are there more rice bags than flour bags?
In the tree planting activity in March, the second group planted five trees, and the third group planted seven times as many trees as the second group. How many trees did the third group plant?
My brother gave 2 1 this book to Xiaoli, Xiaojun and Xiaoming equally. How many books did Xiaojun take?
Mom bought 24 meters of cloth and divided it into 4 pieces on average. How many meters per piece? If you make two clothes for each piece, how many pieces can you make?
During the summer vacation, Xiaohua borrowed a copy of "100,000 Why" from the school library. Xiaohua reads 9 pages every day. How many pages have she read in 8 days? There are still 68 pages left to read. How many pages are there in this book?
Six, thinking about the problem
1, * * * There are 24 sweets, and each plate contains 6.
There are 9 basketballs in the gym. How many footballs are there in the gym?