Let us analyse the numebr 1.4 first.
Ones - - - - - - - Decimal Point - - - - - - - Tenths - - - - - - - Other parts
1- - - - - - - - - - - - . - - - - - - - - - - - - - - 4 - - - - - - - - - - - -0
To round a number to their nearest tenth, we need to look at its hundredth place. As hundredth is neither ones nor tenths, we know that it is 0.
A 0 ≤ 5, we can just ignore the hundredth place. So, 1.4 rounded tp the nearest tenth is actually still 1.4.
NOTE
You actually can’t round 1.4 to 1.4, but I’m doing it for ‘specific purposes’.
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3.7 (which is 13.69)
When rounding 14.4 to the nearest tenth, you look at the digit in the hundredths place, which is 4. Since 4 is less than 5, you round down. Therefore, 14.4 rounded to the nearest tenth is 14.4.
The nearest tenth is 0.5
It is 2.1 to the nearest tenth
It is 0.4 to the nearest tenth