Question
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Answer
\( 12 \text{ tens} + 9 \text{ units} = 129 \text{ units} \)
Solution
To solve the expression \( 12 \text{ tens} + 9 \text{ units} \), we can break it down step by step.
1. **Convert tens to units**:
- Since 1 ten is equal to 10 units, we can convert 12 tens to units:
\[
12 \text{ tens} = 12 \times 10 = 120 \text{ units}
\]
2. **Add the units**:
- Now, we add the converted units to the 9 units:
\[
120 \text{ units} + 9 \text{ units} = 129 \text{ units}
\]
Thus, the final result is:
\[
12 \text{ tens} + 9 \text{ units} = 129 \text{ units}
\]
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Simplify this solution Mind Expander
12 tens is equal to 120 (since 10 x 12 = 120), and when you add 9 units, you get 120 + 9 = 129. So, 12 tens + 9 units equals 129. If you're tackling similar problems, remember that each 'ten' represents ten units. A common mistake is forgetting to convert the tens to units before adding them. Always visualize or write it out to avoid confusion!
