1. **Problem 1:** Jonah has 750. He spends \frac{1}{4} of this money on travel and some on food. After spending, he has 437.50 left. Find the fraction of 750 he spends on food.
Step 1: Calculate the amount spent on travel:
$$750 \times \frac{1}{4} = 187.5$$
Step 2: Calculate the total amount spent (travel + food):
$$750 - 437.5 = 312.5$$
Step 3: Calculate the amount spent on food:
$$312.5 - 187.5 = 125$$
Step 4: Find the fraction of 750 spent on food:
$$\frac{125}{750} = \frac{1}{6}$$
**Answer:** Jonah spends \frac{1}{6} of his money on food.
2. **Problem 2:** Without a calculator, work out $$2 \frac{4}{7} - 1 \frac{1}{8}$$ and give the answer as a mixed number in simplest form.
Step 1: Convert mixed numbers to improper fractions:
$$2 \frac{4}{7} = \frac{2 \times 7 + 4}{7} = \frac{18}{7}$$
$$1 \frac{1}{8} = \frac{1 \times 8 + 1}{8} = \frac{9}{8}$$
Step 2: Find common denominator (LCM of 7 and 8 is 56):
$$\frac{18}{7} = \frac{18 \times 8}{56} = \frac{144}{56}$$
$$\frac{9}{8} = \frac{9 \times 7}{56} = \frac{63}{56}$$
Step 3: Subtract the fractions:
$$\frac{144}{56} - \frac{63}{56} = \frac{81}{56}$$
Step 4: Convert back to mixed number:
$$\frac{81}{56} = 1 \frac{25}{56}$$
Step 5: Simplify \frac{25}{56} if possible (25 and 56 share no common factors other than 1), so it is simplest form.
**Answer:** $$1 \frac{25}{56}$$
3. **Problem 3a:** Write 164703 correct to the nearest thousand.
Step 1: Look at the hundreds digit (7), which is \geq 5, so round up.
Step 2: 164703 rounded to nearest thousand is 165000.
4. **Problem 3b:** Write 16.983 correct to 1 decimal place.
Step 1: Look at the second decimal digit (8), which is \geq 5, so round up.
Step 2: 16.983 rounded to 1 decimal place is 17.0.
5. **Problem 3c:** Write 0.037665 correct to 2 significant figures.
Step 1: Identify first two significant figures: 3 and 7.
Step 2: Look at the third significant figure (6), which is \geq 5, so round up.
Step 3: 0.037665 rounded to 2 significant figures is 0.038.
**q_count:** 5
Money Fractions Rounding
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