Question 2 In Mr. Lee's class, $$ \frac{1}{2} $$ of the grade is from projects and $$ \frac{1}{4} $$ is from tests. The rest is from participation. What fraction of the grade is from participation? A. $$ \frac{1}{4} $$ B. $$ \frac{1}{3} $$ C. $$ \frac{1}{8} $$ D. $$ \frac{1}{2} $$ Question 3 A giraffe at the zoo was 200 centimeters tall in January and 32 meters tall in November. What is the difference in height between January and November, in centimeters? A. 3 B. 29,800 C. 3,000 D. 3,200

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**Question 2**

1. The total grade is $$ 1 $$ (whole).
2. The projects account for $$ \frac{1}{2} $$ of the grade.
3. The tests account for $$ \frac{1}{4} $$ of the grade.
4. The participation grade is the remaining part:

$$
1 - \left(\frac{1}{2} + \frac{1}{4}\right)
$$

5. First, add the fractions:

$$
\frac{1}{2} + \frac{1}{4} = \frac{2}{4} + \frac{1}{4} = \frac{3}{4}
$$

6. Subtract from $$ 1 $$:

$$
1 - \frac{3}{4} = \frac{4}{4} - \frac{3}{4} = \frac{1}{4}
$$

The fraction of the grade from participation is $$ \frac{1}{4} $$.

**Answer: A. $$ \frac{1}{4} $$**

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**Question 3**

1. The giraffe's height in January is given as $$ 200 $$ centimeters.
2. In November, the giraffe's height is given as $$ 32 $$ meters, which needs to be converted to centimeters:

$$
32 \, \text{meters} = 32 \times 100 = 3200 \, \text{centimeters}
$$

3. The difference in height is:

$$
3200 \, \text{cm} - 200 \, \text{cm} = 3000 \, \text{cm}
$$

The difference in height between January and November is $$ 3000 $$ centimeters.

**Answer: C. 3000**
**Question 2** - Projects: $$ \frac{1}{2} $$ - Tests: $$ \frac{1}{4} $$ - Participation: $$ 1 - \left(\frac{1}{2} + \frac{1}{4}\right) = \frac{1}{4} $$ **Answer: A. $$ \frac{1}{4} $$** --- **Question 3** - January height: $$ 200 $$ cm - November height: $$ 32 $$ meters $$ = 3200 $$ cm - Difference: $$ 3200 - 200 = 3000 $$ cm **Answer: C. 3000**

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