Answer
1. **Ascending Order of Decimal Numbers**:
- 0.17, 1.1756, 7.016, 8.105, 56.106, 56.525, 670.76, 685.503, 787.874
2. **Ascending Order of Fractions**:
- 3/17, 1/2, 7/9, 12/7
3. **Calculations**:
- 7/4 × 2/5 = 7/10
- 5/2 × (5/4 + 11/20) = 9/2
- 1/8 of (64 + 118/21 - 7) = 1315/168
Solution
Let's solve the problems step by step.
### Part 1: Rearranging Numbers in Ascending Order
#### 1.1: Rearranging Decimal Numbers
The numbers given are:
- \( 1.1756 \)
- \( 0.17 \) (interpreting \( 017 \) as \( 0.17 \))
- \( 56.525 \)
- \( 670.76 \)
- \( 8.105 \)
- \( 56.106 \)
- \( 685.503 \)
- \( 7.016 \)
- \( 787.874 \)
Now, let's convert them to a consistent format and compare them:
- \( 0.17 \)
- \( 1.1756 \)
- \( 7.016 \)
- \( 8.105 \)
- \( 56.106 \)
- \( 56.525 \)
- \( 670.76 \)
- \( 685.503 \)
- \( 787.874 \)
Now, arranging them in ascending order:
1. \( 0.17 \)
2. \( 1.1756 \)
3. \( 7.016 \)
4. \( 8.105 \)
5. \( 56.106 \)
6. \( 56.525 \)
7. \( 670.76 \)
8. \( 685.503 \)
9. \( 787.874 \)
#### 1.2: Rearranging Fractions
The fractions given are:
- \( 1.2 \frac{5}{7} \) (which is \( \frac{12}{7} \))
- \( \frac{3}{17} \)
- \( \frac{1}{2} \)
- \( \frac{7}{9} \)
To compare these fractions, we can convert them to a common denominator or decimal form:
- \( \frac{12}{7} \approx 1.714 \)
- \( \frac{3}{17} \approx 0.176 \)
- \( \frac{1}{2} = 0.5 \)
- \( \frac{7}{9} \approx 0.778 \)
Now, arranging them in ascending order:
1. \( \frac{3}{17} \)
2. \( \frac{1}{2} \)
3. \( \frac{7}{9} \)
4. \( \frac{12}{7} \)
### Part 2: Calculations
#### 2.1: Calculate \( \frac{7}{4} \times \frac{2}{5} \)
To multiply fractions, we multiply the numerators and the denominators:
\[
\frac{7}{4} \times \frac{2}{5} = \frac{7 \times 2}{4 \times 5} = \frac{14}{20}
\]
Now, simplify \( \frac{14}{20} \):
\[
\frac{14 \div 2}{20 \div 2} = \frac{7}{10}
\]
#### 2.2: Calculate \( \frac{5}{2}\left(\frac{5}{4}+\frac{11}{20}\right) \)
First, we need to add \( \frac{5}{4} \) and \( \frac{11}{20} \). To do this, we find a common denominator, which is \( 20 \):
\[
\frac{5}{4} = \frac{5 \times 5}{4 \times 5} = \frac{25}{20}
\]
Now, add:
\[
\frac{25}{20} + \frac{11}{20} = \frac{25 + 11}{20} = \frac{36}{20}
\]
Now, simplify \( \frac{36}{20} \):
\[
\frac{36 \div 4}{20 \div 4} = \frac{9}{5}
\]
Now, multiply by \( \frac{5}{2} \):
\[
\frac{5}{2} \times \frac{9}{5} = \frac{5 \times 9}{2 \times 5} = \frac{9}{2}
\]
#### 2.3: Calculate \( \frac{1}{8} \) of \( 64 + \frac{118}{21} - 7 \)
First, calculate \( 64 + \frac{118}{21} - 7 \):
\[
64 - 7 = 57
\]
Now, we need to add \( 57 \) and \( \frac{118}{21} \). Convert \( 57 \) to a fraction with a denominator of \( 21 \):
\[
57 = \frac{57 \times 21}{21} = \frac{1197}{21}
\]
Now, add:
\[
\frac{1197}{21} + \frac{118}{21} = \frac{1197 + 118}{21} = \frac{1315}{21}
\]
Now, calculate \( \frac{1}{8} \) of \( \frac{1315}{21} \):
\[
\frac{1}{8} \times \frac{1315}{21} = \frac{1315}{168}
\]
### Summary of Results
1. **Ascending Order of Decimal Numbers**:
- \( 0.17, 1.1756, 7.016, 8.105, 56.106, 56.525, 670.76, 685.503, 787.874 \)
2. **Ascending Order of Fractions**:
- \( \frac{3}{17}, \frac{1}{2}, \frac{7}{9}, \frac{12}{7} \)
3. **Calculations**:
- \( \frac{7}{4} \times \frac{2}{5} = \frac{7}{10} \)
- \( \frac{5}{2}\left(\frac{5}{4}+\frac{11}{20}\right) = \frac{9}{2} \)
- \( \frac{1}{8} \) of \( 64 + \frac{118}{21} - 7 = \frac{1315}{168} \)
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