Write the following in standard form.
`70,00,000 + 80,000 + 900`

Answer

To write the number `70,00,000 + 80,000 + 900` in standard form, we will follow these steps:

### Step 1: Understand the values
- `70,00,000` is 70 lakhs.
- `80,000` is 80 thousands.
- `900` is simply 900.

### Step 2: Convert each number to the same place value
We can express all numbers in terms of lakhs for easier addition:
- `70,00,000` is already in lakhs.
- `80,000` can be converted to lakhs:
\[ 80,000 = 0.8 \text{ lakhs} \]
- `900` can also be converted to lakhs:
\[ 900 = 0.009 \text{ lakhs} \]

### Step 3: Add the numbers together
Now, we can add these values in lakhs:
\[ 70 + 0.8 + 0.009 = 70.809 \text{ lakhs} \]

### Step 4: Write in standard form
To express `70.809 lakhs` in standard form, we write it as:
\[ 7.0809 \times 10^1 \]

### Final Answer
Thus, the standard form of `70,00,000 + 80,000 + 900` is:
\[ 7.0809 \times 10^1 \]

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