問題一覧
1
Convert 20 grams to pounds = 20/450
0.0444
2
0.0000222=
2.22*10^-5
3
Convert 20 pounds to grams =
9070
4
2.22*10^ 5=
222000
5
find 1/2+1/8×1/2÷1/4 =
3⁄4
6
9/16 + 3/8 = 9+6/16 =
15/16
7
If we have 30% out of 600 cars are unserviceable how many cars can be used 30/100 x 600 =180 cares unserviceable 600 – 180 =
420 cares can be used
8
9/30 as a decimal =
0.3
9
Cube root of 2*3=
2
10
9/8 + 3/16 =
15/16
11
Input gear One complete revolution of 120 teeth output rotate gear without put 20 revolution, the output rotates =
6rev
12
Three angle triangle sum =
180
13
9/4+ 5/12+ 5 1/8 =
19/24
14
0.8 as fraction =
8/10
15
has one pairs of parallel sides
Trapezium
16
Area of rhombus can be calculated by
1⁄2 d1 x d2
17
1/5 + 1/6 + 3/10 =
2/3
18
Pounds to kilogram
multiply by 0.4536
19
20,28,17,34,40,11,34,26,find median =
27 (11,17,20,26,28,34,34,40)
20
10 cm diameter cylinder with 10 cm height total surface area =
150 pi cm2
21
2 6/7 to improper fraction =
20/7
22
50 square feet into square meter =
4.645
23
30 as percentage of 50=
60%
24
3⁄4 x 82=
61.5
25
(4*2x4*4)*3=
4*18
26
(X- 4)(x-6) =
x*2 - 10x + 24
27
2x=3(x+2) x=
-6
28
If (x+2)8 = 10 then x =
-3/4
29
If x*2-9=0 then x =
3 x= -3
30
(x-y)*2 simplify
x*2 - 2xy + y*2
31
(3*2x3*4)^2 is =
3*12
32
(X-2)(x+6)=
x^2+4x-12
33
4x=2(x-2) x =
-2
34
(Y+8)/2 =15 then y=
22
35
(X-y)(x+y) simplify --
x^2-y^2
36
1000 in binary is
8 in decimal
37
(1⁄2)^2 =
1/4
38
Hexadecimal is
a base 16 numbering system
39
Binary coded decimal uses
binary numbering system
40
Log10(0.1) =
-1
41
If x+3y = 4 and x-y = 2 then
x=2.5
42
10000 in binary equal
16 in decimal
43
9^1⁄2 =
3
44
Octal is the base of
8
45
A in hexadecimal =
10
46
Log 10 (100) =
2
47
The process of reducing the number of significant digits in a number is
rounding
48
Work the following sum4{2(5-1)-3}+8 =
28
49
Factorize the following: 4x2-6x-28=0
(4x-14)(x+2)
50
73816 in binary coded decimal is
11100111000
51
13 octal in base 10 equal
11
52
Two gears are in mesh has twice number of teeth then:
the fewer teeth rotate faster.
53
Solve for x in 3(x+2)=30+2(x-4) =
16
54
Calculate (3+2)(12-4)(9-2)=
280
55
27,6and 9 has common factor of
3
56
Calculate for x and y in equation x+y =2 and 2x-y=7
x=3 and y= -1
57
Calculate for x and y in equation 3x+y=- 2 and 2x-3y=1
x=-1 and y=1
58
(a+b)2 a=3 b=4 ---
49
59
1681 square root is
41
60
36,66,126 lowest common factor is
6
61
Log 50 =
1.699
62
Simplify 4x- 3y + 3x - y -2x ---
5x - 4y
63
Factorise 3 +21x -----
3(1+7x)
64
X=y + ac make c is the subject ---
c= (x-y)/a
65
Y=6x+4 find the slope =
6
66
73 octal equal in hexa =
3B
67
Add 101+111 in binary =
1100
68
BCD 011100001001 to decimal is
709
69
Express 56.33 in standard form =
5.633 x10
70
Sin 30=
0.5
71
18 base 10 to binary is
10010
72
Solve: 3x – 2 = 2x + 4 =
6
73
ax2+ bx + c,
x is a variable
74
The internal angle of a hexagon is
120
75
A cute angle has less than
90
76
In equilateral triangle
all sides are the same length
77
The Supplement of 650 is
115
78
In a scalene triangle
no 2 sides are the same length
79
The equation y = x^2 +3x -10 the graph defines
a parabola
80
A straight line having the equation Y = -2x + 10. At what point cut x-axis?
5
81
for the straight line having the equation 4y=4x+8 the y intercept is :
2
82
find the gradient of a graph has two point (3,9)(9,1) =
-4/3
83
What is the gradient of the line having an equation 5x -3y=2?
5/3