Alfred Ajibola
- 01st February, 2026 @ 09:22 PM
Topics in Mathematics
Linear Equation in Mathematics Word Problems leading to Algebraic Expression BODMAS in Algebra Multiplication and Division in Algebra Addition and Subtraction in Algebra Multiplication of Number Bases Subtraction of Number Bases Addition of Number Bases Division of Number Base Number Base Conversion Number Base System Significant Figures Rounding Off Numbers Decimal Place Value Fraction Word Problems Word Problems in Fraction Multiplication and Division of Fractions Addition and Subtraction of Fractions Expressing One Quantity as a Percentage of Another Expressing One Quantity as a Fraction of AnotherAcademic Questions in Mathematics
What type of polygon is shown in the above image?
A. Nonagon
B. Decagon
C. Octagon
D. Hexagon
E. Hepagon
F. Pentagon
Which of the following is not part of a circle?
A. Section
B. Sector
C. Segment
D. Semicircle
E. Secant
F. Center
What angle is shown in the above image?
A. Complementary
B. Supplementary
C. Acute
D. Obtuse
E. Reflex
F. Straight
An angle greater than 90o but less than 180o is termed _____.
A. Complementary
B. Supplementary
C. Acute
D. Obtuse
E. Reflex
F. Straight
Factorize 12a2 - 20a + 3
A. (6a - 1)(2a - 3)
B. (6a - 1)(2a + 3)
C. (6a + 1)(2a - 3)
D. (6a + 1)(2a + 3)
E. (-6a + 1)(2a - 3)
F. (-6a + 1)(2a + 3)
Simplify 10ab + 7ab
A. 17ab2
B. 17a2b2
C. 3ab2
D. 3a2b2
E. 17ab
F 3ab
Which of the following is not a type of angle?
A. Right angle
B. Left Angle
C. Acute Angle
D. Complete Angle
E. Straight Angle
F. Reflex angle
Two lines that can never meet each other are best considered as _____ lines.
Significant figures refers to the digits in a number that show its precision. They are often shortened as "sig figs".
The significant figures of a number will include all non-zero digits, zeros between non-zeros, and trailing zeros after a decimal point. However, understand that leading zeros are ignored when writing significant figures.
The use of significant figures can be crucial in science for indicating the accuracy of measurements.
Please read on rounding off numbers here.
Below are rules for determining significant figures:
All non-zero digits (that is; 1, 2, 3, 4, 5, 6, 7, 8 and 9) are always significant. For instance, the number 75437 has five significant figures.
Zeros between non-zero digits are significant. These are called captive zeros. For example , the number 70007 has five significant figures.
Leading zeros or zeros to the left of the first non-zero digit are not significant. For example the number 0.002365 four significant figures only.
Trailing zeros to the right of a decimal point are significant. For example, (e.g., 300.000 has six significant figures.
Trailing zeros at the end of a whole number without a decimal point are generally not significant. For example, 30400 will often have three significant figures. However, note that the presence of a decimal point makes trailing zeros significant. For instance 1090.0 has five significant figures.
Please read on decimal places here.
Please read on place value of numbers here.
Example 1
Solution
Digit of importance is 4. Next, we'll look at the next digit to the right, which is 1. Since 1 is less than 5, we keep the first significant figure as it is.
Example 2
Solution
Digit of importance is 2. Next, we'll look at the next digit to the right, which is 1. Since 1 is less than 5, we keep the first significant figure as it is.
Example 3
Solution
Digit of importance is 5. Next, we'll look at the next digit to the right, which is 9. Since 9 is greater than 5, we'll we'll round the 5 up to 6.
Example 4
Solution
Digit of importance is 3. Next, we'll look at the next digit to the right, which is 2. Since 2 is less than 5, we keep the first significant figure as it is.
Please read on the conversion of fractions to decimals here.
You can read on number base conversion here.
1. Round off each of the following to one significant figure, two significant figures and 3 significant figures respectively.
645.752
0.0046
815.004
9020000
800980
0.005742
0.870775
35.009
900.009
4689.700
0.09800
1234.01
Please read on word problems in fraction here.
Please read on mathematics week 7 topic for jss1 first term here.
Please read on mathematics scheme of work for jss1 first term here.
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Amazing facts in Mathematics
The opposite sides of a dice will always give a sum of seven
31,556,926 seconds makes one year
From 0 through 1000, the only number that has the letter 'a' in it is 'one thousand'
÷
The division symbol '÷' is actually called an obelus
Four is the only number in the English language that is spelt with the same number of letters as the number (4) itself
40 is spelt as forty and not 'fourty'. It is the only number that is spelt with letters arranged in alphabetical order
An odd number is a number that cannot be divisible by 2.
Every odd number has an 'e' in its spelling. They include:
555 in Thailand sounds like 'hahaha'. This is because the number '5' means 'ha' in Thailand
In mathematics, 10! means 10 factorial. Below is its calculation:
10! = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 3628800
Interestingly, 3628800 seconds is the same as 42 days
42 days is the same as 6 weeks
We can therefore say that 10! equals 6 weeks or 3628800 seconds in mathematics
When you multiply 111,111,111 by 111,111,111; the result equals 12,345,678,987,654,321
Notable points in Mathematics
Let's use algebra to explain the simple statement below:
I am a number. When you subtract 3 from me, the result is 9. what number am I ?
Of course we know the answer is 12. You probably guessed it from your mind because it was that simple. The truth is, We could have a much more complicated statement of such; and that is where algebra comes into play.
Now, to apply algebra in the above statement, we use letters or alphabets to represent the unknown number(s). So using algebra, we can write:
Let the number be y
y - 3 = 9
y = 9 + 3
y = 12
The image above shows a right angled triangle. The angle of the above right triangle is denoted as θ. Below are some points to note:
Hypotenuse is always the longest side of the triangle.
Opposite is the side opposite the angle (θ)
Adjacent is the shorter side next to the angle (θ)
Each of Sin θ, cos θ and tan θ are the ratio of sides of the right triangle. They are calculated by using the formula (margic word) sohcahtoa:
soh
Sin θ = Opposite/Hypotenuse
cah
Cos θ = Adjacent/Hypotenuse
toa
Tan θ = Opposite/Adjacent
Circumference in mathematics means the distance around the edge of a circle (or a another curved surface).
Circumference is to circle or any other curved surface
Perimeter means the distance around a square or rectangle or polygon.
Perimeter is to square or rectangle or polygon