Question

1. eng kichik olchov birligiga otkazib hisoblang.

45 ha 12 a + 81 ha 38 a - 16 ha 87 a
95 a : 10 + 235 m² · 7
12 ha - 17 m² · 5 · 8

Explanation:

To solve these problems, we first need to recall the conversion: \( 1 \text{ ha} = 100 \text{ a} \) and \( 1 \text{ a} = 100 \text{ m}^2 \), so \( 1 \text{ ha} = 10000 \text{ m}^2 \), \( 1 \text{ a} = 100 \text{ m}^2 \). We will handle each expression one by one.

First Expression: \( 45 \text{ ha } 12 \text{ a} + 81 \text{ ha } 38 \text{ a} - 16 \text{ ha } 87 \text{ a} \)

Step 1: Convert all to "a" (since \( 1 \text{ ha} = 100 \text{ a} \))

• \( 45 \text{ ha } 12 \text{ a} = 45 \times 100 + 12 = 4500 + 12 = 4512 \text{ a} \)
• \( 81 \text{ ha } 38 \text{ a} = 81 \times 100 + 38 = 8100 + 38 = 8138 \text{ a} \)
• \( 16 \text{ ha } 87 \text{ a} = 16 \times 100 + 87 = 1600 + 87 = 1687 \text{ a} \)

Step 2: Perform the arithmetic operations

\( 4512 + 8138 - 1687 \)

• First, add \( 4512 + 8138 = 12650 \)
• Then, subtract \( 12650 - 1687 = 10963 \text{ a} \)

Second Expression: \( 95 \text{ a} \div 10 + 235 \text{ m}^2 \times 7 \)

Step 1: Convert \( 95 \text{ a} \div 10 \) to \( \text{m}^2 \) (since \( 1 \text{ a} = 100 \text{ m}^2 \))

• \( 95 \text{ a} \div 10 = 9.5 \text{ a} = 9.5 \times 100 = 950 \text{ m}^2 \)

Step 2: Calculate \( 235 \text{ m}^2 \times 7 \)

• \( 235 \times 7 = 1645 \text{ m}^2 \)

Step 3: Add the two results

\( 950 + 1645 = 2595 \text{ m}^2 \)

Third Expression: \( 12 \text{ ha} - 17 \text{ m}^2 \times 5 \times 8 \)

Step 1: Calculate \( 17 \text{ m}^2 \times 5 \times 8 \)

• \( 17 \times 5 \times 8 = 17 \times 40 = 680 \text{ m}^2 \)

Step 2: Convert \( 12 \text{ ha} \) to \( \text{m}^2 \) (since \( 1 \text{ ha} = 10000 \text{ m}^2 \))

• \( 12 \text{ ha} = 12 \times 10000 = 120000 \text{ m}^2 \)

Step 3: Subtract the two results

\( 120000 - 680 = 119320 \text{ m}^2 \)

Final Answers:

1. \( 45 \text{ ha } 12 \text{ a} + 81 \text{ ha } 38 \text{ a} - 16 \text{ ha } 87 \text{ a} = \boldsymbol{10963 \text{ a}} \)
2. \( 95 \text{ a} \div 10 + 235 \text{ m}^2 \times 7 = \boldsymbol{2595 \text{ m}^2} \)
3. \( 12 \text{ ha} - 17 \text{ m}^2 \times 5 \times 8 = \boldsymbol{119320 \text{ m}^2} \)

Answer:

To solve these problems, we first need to recall the conversion: \( 1 \text{ ha} = 100 \text{ a} \) and \( 1 \text{ a} = 100 \text{ m}^2 \), so \( 1 \text{ ha} = 10000 \text{ m}^2 \), \( 1 \text{ a} = 100 \text{ m}^2 \). We will handle each expression one by one.

First Expression: \( 45 \text{ ha } 12 \text{ a} + 81 \text{ ha } 38 \text{ a} - 16 \text{ ha } 87 \text{ a} \)

Step 1: Convert all to "a" (since \( 1 \text{ ha} = 100 \text{ a} \))

• \( 45 \text{ ha } 12 \text{ a} = 45 \times 100 + 12 = 4500 + 12 = 4512 \text{ a} \)
• \( 81 \text{ ha } 38 \text{ a} = 81 \times 100 + 38 = 8100 + 38 = 8138 \text{ a} \)
• \( 16 \text{ ha } 87 \text{ a} = 16 \times 100 + 87 = 1600 + 87 = 1687 \text{ a} \)

Step 2: Perform the arithmetic operations

\( 4512 + 8138 - 1687 \)

• First, add \( 4512 + 8138 = 12650 \)
• Then, subtract \( 12650 - 1687 = 10963 \text{ a} \)

Second Expression: \( 95 \text{ a} \div 10 + 235 \text{ m}^2 \times 7 \)

Step 1: Convert \( 95 \text{ a} \div 10 \) to \( \text{m}^2 \) (since \( 1 \text{ a} = 100 \text{ m}^2 \))

• \( 95 \text{ a} \div 10 = 9.5 \text{ a} = 9.5 \times 100 = 950 \text{ m}^2 \)

Step 2: Calculate \( 235 \text{ m}^2 \times 7 \)

• \( 235 \times 7 = 1645 \text{ m}^2 \)

Step 3: Add the two results

\( 950 + 1645 = 2595 \text{ m}^2 \)

Third Expression: \( 12 \text{ ha} - 17 \text{ m}^2 \times 5 \times 8 \)

Step 1: Calculate \( 17 \text{ m}^2 \times 5 \times 8 \)

• \( 17 \times 5 \times 8 = 17 \times 40 = 680 \text{ m}^2 \)

Step 2: Convert \( 12 \text{ ha} \) to \( \text{m}^2 \) (since \( 1 \text{ ha} = 10000 \text{ m}^2 \))

• \( 12 \text{ ha} = 12 \times 10000 = 120000 \text{ m}^2 \)

Step 3: Subtract the two results

\( 120000 - 680 = 119320 \text{ m}^2 \)

Final Answers:

1. \( 45 \text{ ha } 12 \text{ a} + 81 \text{ ha } 38 \text{ a} - 16 \text{ ha } 87 \text{ a} = \boldsymbol{10963 \text{ a}} \)
2. \( 95 \text{ a} \div 10 + 235 \text{ m}^2 \times 7 = \boldsymbol{2595 \text{ m}^2} \)
3. \( 12 \text{ ha} - 17 \text{ m}^2 \times 5 \times 8 = \boldsymbol{119320 \text{ m}^2} \)