3. A chemistryexperiment calls for no more thar 0.225 ounce of aeid. Which number below is less thar $$ 0.225 ? $$

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1. To determine if a number $$ a $$ is less than $$ 0.225 $$, we check whether
   $$
   a < 0.225.
   $$

2. For example, consider the number $$ 0.20 $$. Writing both numbers with three decimal places, we have:
   $$
   0.20 = 0.200 \quad \text{and} \quad 0.225 = 0.225.
   $$

3. We compare digit by digit:
   - The tenths digit: $$ 2 $$ in both numbers.
   - The hundredths digit: $$ 0 $$ in $$ 0.200 $$ vs. $$ 2 $$ in $$ 0.225 $$.

Since $$ 0 < 2 $$, it follows that:
   $$
   0.200 < 0.225.
   $$

4. Therefore, $$ 0.20 $$ (or $$ 0.200 $$) is less than $$ 0.225 $$.

So, one valid answer is $$ 0.20 $$.
One number less than 0.225 is 0.20.

3. A chemistryexperiment calls for no more thar 0.225 ounce of aeid. Which number below is less thar \( 0.225 ? \)

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