Fractions, Decimal & Percentages
0.4 as a fraction
2/5
If Kathy puts angles 75°, 143°, 60° and 72° together there will be a gap. Explain why.
Sum of angles of a quadrilateral equals 360°. This add up to 350°
35% to decimal.
0.35
A cone is a polyhedron
True or False
False
2(3x – 8) + 5x
11x -16
1/4 + 3/8
5/8
If one unequal angle in an isosceles triangle equals 80°, size of the other two angles.
50° each
0.6 × 0.5
0.30
All rhombus are parallelograms
True or False
True
-18 ÷ (-3)2
-2
Increase 80 by 25%
100
If two angles in a kite are 90° and 44°, find the other two angles.
113° each
5/6 – 1/12
3/4
The dashed line in plans and elevation indicates ............................. view
hidden
(4³ ÷ 2²) + 7
23
Original number if 20% decrease gives 72
90
Which of these points lie on the same horizontal line?
(5,8), (8,5), (-5,8), (8,-5), (5,-8)
(5,8),(-5,8)
2/3 x 63/42 x 15/45
1/3
If a square based pyramid has 5 faces, how many vertices does it have?
5
In any pyramid the number of faces and vertices are same.
Cube root of 0.729
0.9
7 similar rooms were painted by a group of volunteers.
Each volunteer painted ¼ of the room.
How many volunteers were there?
28
These are the coordinates of three of the vertices of a rectangle: (5,6), (5,2) and (11,2). What is the area of the rectangle?
24
4500 ÷ 106
0.004500
A prism has 24 edges.
a) How many vertices does it have?
b) How many faces does it have?
a) 16 b)10
A submarine is at a depth of 150 m below sea level. It descends another 35 m. What is its new depth?
-185