JSS1: MATHEMATICS  1ST TERM

Whole Numbers I  Week 13 Topics1 Quiz

Whole Numbers II  Week 21 Topic1 Quiz

Counting in Base Two  Week 34 Topics1 Quiz

Arithmetic Operations  Week 43 Topics1 Quiz

Lowest Common Multiple (LCM)  Week 52 Topics1 Quiz

Highest Common Factor  Week 61 Topic1 Quiz

Fraction  Week 77 Topics1 Quiz

Basic Operations with Fractions I  Week 83 Topics1 Quiz

Basic Operations with Fractions II  Week 91 Topic1 Quiz

Directed Numbers  Week 103 Topics1 Quiz

Estimation and Approximation I  Week 113 Topics1 Quiz

Estimation and Approximation II  Week 126 Topics1 Quiz
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Place Value
Each digit in a whole number and decimal number has a place value, based on its position from the right.
The value of a digit in the number is the digit multiplied by the place value.Â
Example: 9783 . 2465
Sum  
9 is in thousands  9 x 1000  9000 
7 is in hundreds  7 x 100  700 
8 is in tens  8 x 10  80 
3 is in units/ones  3 x 1  3 
2 is in tenths  2 x \( \frac{1}{10}\)  0.2 
4 is in hundredths  4 x \( \frac{1}{100}\)  0.04 
6 is in thousandths  6 x \( \frac{1}{1000}\)  0.006 
5 is in ten thousandths  5 x \( \frac{1}{10000}\)  0.0005 
9783.2465 
Rules for Decimal Place values:
Below are the place value rules in the number 9783.2465 above;
The first digit to the left of the decimal point is in the units/ones place, i.e. 3 units.
The second digit to the left of the decimal point is in the tens place, i.e. 8 tens.
The third digit to the left of the decimal point is in the hundreds place, i.e. 7 hundreds.
The fourth digit to the left of the decimal point is in the thousands place, i.e. 9 thousands.
The first digit to the right of the decimal point is in the tenths place, i.e. 2 tenths.
The second digit to the right of the decimal point is in the hundredths place, i.e. 4 hundredths.
The third digit to the right of the decimal point is in the thousandths place, i.e. 6 thousandths.
The fourth digit to the right of the decimal point is in the tenthousandths place, i.e. 5 tenthousandths.
Example 1:
Give the digits in ones place and tenths place in the number 75.39
Solution:
Step 1:
75.39
In the given number 75.39, the digit in ones place is 5 as it is the first digit to the left of the decimal point.
Step 2:
75.39
The digit in tenths place is 3 as it is the first digit to the right of decimal point.
Example 2
Write down the place values for all the numbers inÂ 9 453 Â 276 . 1847
Solution:
9 – MillionÂ
4 – Hundred thousandsÂ
5 â€“ Ten thousandsÂ
3 – ThousandsÂ
2 – HundredsÂ
7 – TensÂ
6 – UnitsÂ
. = Decimal pointÂ
1 – TenthsÂ
8 – HundredthsÂ
4 – ThousandthsÂ
7 – Ten thousandths
Example 3
What is the value of 5 in number 31.8752Â
Solution:
3 = TensÂ
1 = UnitsÂ
. = Decimal pointÂ
8 = TenthsÂ
7 = HundredthsÂ
5 = ThousandthsÂ
2 = Ten thousandthsÂ
: 5 is thousandths in number 31.8752
Example 4
What is the place value of 9 and 3 in number 97814.060253?Â
Solution:
a. 9 in 97814.060253 is ten thousands
b. 3 in 97814.060253 is millionthsÂ
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