The first question; Fill it out carefully.
(
1
)
12:8=9:6
(2)
Division of two numbers
Two ratios are equal to an equation.
(3)20
(4)
2000000
1
40 (5)a:b (6)
500000
1
(7)
counter
(
8)
3 (9)
straight
( 10)
counter
1:x ( 1 1)
straight
( 12)
straight
the second question
Right or wrong
√
×
√
×
√
Third question
;
Multiple choice
.
B
B
C
A
B
The fourth question
; ( 1)
1. 1
40
five
nine
nine
2
0.9 1
2 1
2
0.9
70
64
12 1
2
1
(2)x= 64
x=0.02
x=5
x= 1
x=6
x= 4.8
The fifth question
.
( 1)
0.75:
four
1
= x； 12
(2)
x；
five
2
= 10;
seven
eight
(3)
five
2
; x=
five
2
; 30
The sixth question
;
solve problems
.
( 1)
4000000
1
=
x
35
three
five
1
=
14000000
x
Answer; The actual distance is
x= 1400
kilometre (km)
The distance on the graph is
x=4
centimetre
(2) 180'
×
10
three
=54'
180'
×
10
three
=54'
180'
×
10
four
=72'
Answer; It is an isosceles triangle.
(
three
)
four
328
=
20
x
Answer; Full length is
1640
rice
(
four
)
500
×
130= 150
x
x
=433.3
≈
434
bag
(
five
)
2000
1
=
x
five
2
1
=
x
three
100
×
60=6000
㎡
(
six
)
6000
×
( 1+
three
1
)=8000
120-6000
×
120
÷
8000=30
sky
Answer; Now it can be advanced.
30
The day is over.
(
seven
) triangular area;
eight
×
six
÷
2=24
㎡
Triangular base;
24
×
2
÷
4.8= 10
㎝
Shaded area;
10
÷
2=5
five
×
five
×
3. 14
÷
2
-
24= 15.25
Square centimeter
Answer; The shaded area is
15.25
Square centimeter