Consumer Arithmetic
A teacher’s annual salary is $30 000. What is her monthly salary?
$2500
What is 25% as a decimal?
0.25
Simplify 6x – 9y + 10x
16x – 9y
The general formula to calculate the area of a rectangle is
Length x Width
The prime factors of 90 are?
2, 3, 5
A security officer works for 40 hours at $10 per hour. What is his basic wage?
$400
Out of a class of 200 students, 15% play cricket. How many students play cricket?
30 students
Determine the value of x for which x + 5 = 1
x = -4
A square has an area of 81 cm2. What is the length of its sides?
9cm
What is the SMALLEST number of books that can be shared equally between 3, 4 or 5 children?
60
There are 150 shops in a mall. If 30% sell clothes, how many do not sell clothes?
105
In a class of 40 pupils two-fifth are boys. How many boys are in the class?
16
If 5 ÷ x = 10. What is the value of x ?
1/ 2
What is the area of a circle whose radius is 10 m? Giving the correct unit. (use π = 3.14)
314 m2
What is the SMALLEST number of pens which can be shared equally among 3, 5 or 6 students?
30
If 12 mangoes would cost $18. How much would16 mangoes cost?
$24
(-1)2 + (-2)3 =
-7
Determine the value of x for which: x / 2 + 5 = 7
x = 4
The length of a side of a square is 4 cm. What is the perimeter of the square?
16 cm
List the prime numbers between 35 and 50
37, 41, 43, 47
If a man works 5 hours overtime at double time for $5 per hour, What is his average wage?
$50
If it takes 6 men 12 hours to fix a car, how long would it take 4 men to fix the car?
18 hours
Given that p = 42 and r = 5, determine the value of p – r2
17
What is the volume of a cube if one side measures 4 cm?
64 cm3
The number 49 097 correct to 3 significant figures is?
49 100