Fill in the appropriate numbers in the box:
5*2/3=(5#3/2)*(2/3#3/2)=5*3/2= 15/2
2/7*9/ 14=(2/7# 14/9)*(9/ 14# 14/9)=2/7# 14/9=4/9
1/2*3/5=( 1/2#5/3)* 1= 1/2#5/3=5/6
Simplified ratio:
3.5 ratio 1.5 = 7 to 3
4 to 0. 16=25 to 1
0. 12 to 3/5= 1 to 5
10.4 to 7.2= 13 to 9
0.6 to 2/9=27 to 10
9/7 to 0. 18=50 to 7
P5:
Look at the picture to find the relationship:
28:4 2 14 7
14:2 7
4:2
Solve the problem:
2. (Music) (50) (Calligraphy) (27)(46)%
3.(9 to 16)(5 to 7)
P6:
Read and copy.
Goose-Goose Teeth-Teeth Look-Book Sun Running Planes-Plants
Train-rain driver-where is the river-here.
P 10:
Simplified ratio:
0.27 to 0.36=3 to 4
12 is 144= 1 yes 12.
One fifth to five/18= 162 to 25.
The three half ratios are 0. 14=25 to 1.
Fill in the box.
1. ratio B= 13 ratio 20
2.a to B=9 to 8
3. The ratio of salt to water is 1 to 19.
4.a to B=5 to 6
5.a to B =7 to 4= 175 to 100.
P 1 1:
Solve the problem.
1.(9)( 160)( 1)( 1 15)
2.( 1 1)
3.( 145)
Area ratio of Party A and Party B: 1 to 2 1.
P 12:
Read one by one.
14 22 3 1 45 56 63
Read and fill in the blanks.
Hobbies 2. Newspapers 3. Cinema 4. Hospital 5. Singer 6. Subway.
P 16:
Find the ratio.
2.5 to 0.5=5.
0.8 to 0.5=8/5
780kg is 39/ 100t =2.
0.22 to 0.33=2/3
39/9 1=39/9 1
0. 12 to 2/3=9/50
P 17:
Solve the problem.
There are 32 people in the first group, 48 people in the second group and 60 people in the third group.
P 18:
Connect.
12 2 1 35 43 54
Choose and answer the sentences.
1.C 2。 C 3。 C 4 explosive C
P22:
For the record, I won't report the calculation results. Do it yourself )
Fill in the blanks.
1.(37.5)(40)
2. (Current price) (Original price) (90)(50)
3.(35)( 13 to 7)
Solve the problem.
1.50
2. 16
P23:
Find the circumference of a circle.
35.12cm
Fill in the blanks.
1.(4)(3)(4/3) (multiplied by 5)
2.( 1 1)(4)( 12)(5.5)(275)
3.(3)(5)(5)(8)(60)
4.(23)(5)
5.(6)(4)
P24:
Wrong, wrong, wrong, right.
P28:
select
B
Fill in the blanks according to the rules.
1.(0.5)(3/7)(37.5%) Law: All molecules are three.
2.(6/5)(60%)( 1.3) Rule: Two numbers are a group and the sum is 1.9.
3. (40%) (1.4) (33/20) (190%) Law: molecule plus 5.
P29:
1. (translation 4)
2. (Rotate 90 degrees counterclockwise) 9 (Translate 3 to the right)
Solve the problem.
1.36
2. 15
P30:
1. Error 2. Error 3. Right 4. Error 5. Error 6. wrong
Choose the right word.
2 1 1 1 1 1 12
four
| comment
2012-1-311:26 enthusiastic users
Ij space oh, iloui, it's just what grade I am. iuiji is not illegal. Let's have a look.
| comment
Level 2
Choose the right word.
2 1 1 1 1 1 12
References:
P4: "*" stands for division symbol, and "#" stands for multiplication symbol.
| comment
2012-2-411:57 916793902 | Level 5
5*2/3=(5#3/2)*(2/3#3/2)=5*3/2= 15/2
2/7*9/ 14=(2/7# 14/9)*(9/ 14# 14/9)=2/7# 14/9=4/9
1/2*3/5=( 1/2#5/3)* 1= 1/2#5/3=5/6
Simplified ratio:
3.5 ratio 1.5 = 7 to 3
4 to 0. 16=25 to 1
0. 12 to 3/5= 1 to 5
10.4 to 7.2= 13 to 9
0.6 to 2/9=27 to 10
9/7 to 0. 18=50 to 7
P5:
Look at the picture to find the relationship:
28:4 2 14 7
14:2 7
4:2
Solve the problem:
2. (Music) (50) (Calligraphy) (27)(46)%
3.(9 to 16)(5 to 7)
Simplified ratio:
0.27 to 0.36=3 to 4
12 is 144= 1 yes 12.
One fifth to five/18= 162 to 25.
The three half ratios are 0. 14=25 to 1.
Fill in the box.
1. ratio B= 13 ratio 20
2.a to B=9 to 8
3. The ratio of salt to water is 1 to 19.
4.a to B=5 to 6
5.a to B =7 to 4= 175 to 100.
P 1 1:
Solve the problem.
1.(9)( 160)( 1)( 1 15)
2.( 1 1)
3.( 145)
Area ratio of Party A and Party B: 1 to 2 1.
P 12:
Read one by one.
14 22 3 1 45 56 63
Find the ratio.
2.5 to 0.5=5.
0.8 to 0.5=8/5
780kg is 39/ 100t =2.
0.22 to 0.33=2/3
39/9 1=39/9 1
0. 12 to 2/3=9/50
P 17:
Solve the problem.
There are 32 people in the first group, 48 people in the second group and 60 people in the third group.
P 18:
Connect.
12 2 1 35 43 54
Choose and answer the sentences.
1.C 2。 C 3。 C 4 explosive C
P22:
For the record, I won't report the calculation results. Do it yourself )
Fill in the blanks.
1.(37.5)(40)
2. (Current price) (Original price) (90)(50)
3.(35)( 13 to 7)
Solve the problem.
1.50
2. 16
P23:
Find the circumference of a circle.
35.12cm
Fill in the blanks.
1.(4)(3)(4/3) (multiplied by 5)
2.( 1 1)(4)( 12)(5.5)(275)
3.(3)(5)(5)(8)(60)
4.(23)(5)
5.(6)(4)
P24:
Wrong, wrong, wrong, right.
P28:
select
B
Fill in the blanks according to the rules.
1.(0.5)(3/7)(37.5%) Law: All molecules are three.
2.(6/5)(60%)( 1.3) Rule: Two numbers are a group and the sum is 1.9.
3. (40%) (1.4) (33/20) (190%) Law: molecule plus 5.
P29:
1. (translation 4)
2. (Rotate 90 degrees counterclockwise) 9 (Translate 3 to the right)
Solve the problem.
1.36
2. 15
P30:
1. Error 2. Error 3. Right 4. Error 5. Error 6. wrong
Choose the right word.
2 1 1 1 1 1 12
1. calculation.
(1) The sum of numbers A and B plus number A is 220, and number B is 170. Find the sum of numbers a and B.
(2) When calculating the division with the remainder, Xiao Ming mistyped the dividend 1 15 as 15 1, and the quotient of the result was 3 larger than the correct result, but the remainder was exactly the same. Write this division formula.
2. Fill in the blanks.
(1) Fill in the appropriate numbers in the following () so that the average of the three numbers is 140.
( ),( )8,( )27
(2) Fill in the numbers 5, 20, 45, 80, 125, _ _ _ _ _ _ _ _ _, 245.
3. Each layer of the ladder diagram consists of black and white squares, and both ends of each layer are black squares (as shown in the figure). What is the number of white squares on the 2000th floor?
4. In a parking lot, 48 cars and motorcycles were parked, including 4 wheels for each car and 3 wheels for each motorcycle. These cars have 65,438+072 wheels. Q: How many cars are there in the parking lot?
5. Give 100 apples to 10 children, and the number of apples per child is different. The child who gets the most apples will get at least a few apples.
6. The bookshelf has three floors, A, B and C, and there are 192 books in it. First, take out as many books as B from A and put them in B, then take out as many books as C from B and put them in C. Finally, take out as many books as A from C and put them in A. At this time, there are as many books in A, B and C.
7. There are 10 chicken farms in a township, and the number of chickens in each chicken farm is different, ranging from 1 10,000. Coincidentally, the sum of the numbers of each chicken farm is equal to 34. How many chickens are raised in this 10 chicken farm?
8. What is the first number on the left of line 100 in the table below?
5 4 3 2
6 7 8 9
13 12 1 1 10
14 15 16 17
2 1 20 19 18
____________!