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JSS1: MATHEMATICS - 1ST TERM

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  1. Whole Numbers I | Week 1
    3Topics
    |
    1 Quiz
  2. Whole Numbers II | Week 2
    1Topic
    |
    1 Quiz
  3. Counting in Base Two | Week 3
    4Topics
    |
    1 Quiz
  4. Arithmetic Operations | Week 4
    3Topics
    |
    1 Quiz
  5. Lowest Common Multiple (LCM) | Week 5
    1Topic
    |
    1 Quiz
  6. Highest Common Factor | Week 6
    1Topic
    |
    1 Quiz
  7. Fraction | Week 7
    7Topics
    |
    1 Quiz
  8. Basic Operations with Fractions I | Week 8
    3Topics
    |
    1 Quiz
  9. Basic Operations with Fractions II | Week 9
    1Topic
    |
    1 Quiz
  10. Directed Numbers | Week 10
    3Topics
    |
    1 Quiz
  11. Estimation and Approximation I | Week 11
    3Topics
    |
    1 Quiz
  12. Estimation and Approximation II | Week 12
    6Topics
    |
    1 Quiz
Lesson Progress
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Each digit in a whole number and decimal number has a place value, based on its position from the right. 

binary jss1 1st term

The value of a digit in the number is the digit multiplied by the place value. 

Example: 9783 . 2465

Sum
9 is in Thousandths9 x 10009000
7 is in hundreds7 x 100700
8 is in tens8 x 10 80
3 is in units/ones3 x 1 3
2 is in tenths2 x \( \frac{1}{10}\) 0.2
4 is in hundredths4 x \( \frac{1}{100}\) 0.04
6 is in thousandths6 x \( \frac{1}{1000}\) 0.006
5 is in ten thousandths5 x \( \frac{1}{10000}\)0.0005
9783.2465
binary jss1 1st term

Rules for Decimal Place values

Below are the place value rules in the number9783.2465 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 ten-thousandths place,i.e. 5 ten-thousandths.

Place Value Chart

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

Sample:  9 453   276 . 1847

Solution

9 – Million 

4 – Hundred thousands 

5 – Ten thousands 

3 – Thousands 

2 – Hundreds 

7 – Tens 

6 – Units 

. = Decimal point 

1 – Tenths 

8 – Hundredths 

4 – Thousandths 

7 – Ten thousandths

Example 3

What is the value of 5 in number 31.8752 

Solution

3 = Tens 

1 = Units 

. = Decimal point 

8 = Tenths 

7 = Hundredths 

5 = Thousandths 

2 = Ten thousandths 

: 5 is thousandths in number 31.8752 

Example 4

What is the value of 9 and 3 in number 97814.060253? 

Solution 

a. 9 in 97814.060253 is ten thousands

b. 3 in 97814.060253 is millionths 

JSCE 2019 Mathematics Past Question

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