At the end of this unit, students should be able to;
Know the number of digits a given number or numeral should have.
In this lesson we will learn how to know the number of digits a particular number should have.
NOTE: A given number should have the following number of digits;
A number in the thousands has four (4) digits. Examples are 7,483, 9,004, 9,130, etc.
A number in the tens of thousands should have five (5) digits. Examples are 93,514, 74,820, 94,703, 63,942, etc.
A number in the hundreds of thousands should have six (6) digits. Examples are 123,456, 453,049, 739,810, 690,285, etc.
A number in the millions should have seven (7) digits. Examples are 4092731, 3,189,460, 7,501,639, etc.
Example 1
Write the number of digits in Three hundred and twenty-one thousand and four.
Solution
Three hundred and twenty-one thousand and four has 6 digits.
Example 2
Write the number of digits in Two million four hundred and fifty-five thousand two hundred and eighty-one.
Solution
Two million four hundred and fifty-five thousand two hundred and eighty-one has 7 digits. The reason is that a number in the millions should have 7 digits.
Example 3
Write the number of digits in Five million and nine.