Question

Which of the following is true?

• A. 0.2 < 0.22 < 2.2 < 2.22
• B. 2.22 < 2.2 < 0.22 < 0.2
• C. 2.22 < 0.22 < 2.2 < 0.2
• D. 2.22 < 2.2 < 0.2 < 0.22

Answer 1

The correct option is A 0.2 < 0.22 < 2.2 < 2.22

To compare two decimal numbers, we first compare the whole number parts.
Since 0 < 2, any decimal number with whole number part 0 will be less than the one with whole number part 2.

Now, considering the digits to the right of the decimal point, we note that 0.2 has 2 tenths and zero hundredths, whereas 0.22 has 2 tenths and 2 hundredths. Thus, 0.2 < 0.22.
Thus, we have 0.2 < 0.22 < 2.2 < 2.22.