Question

Find the sum and write your answer in scientific notation (4.3×103)+(2.5×103)

Answer 1

$\text{Hey there!}$

$\text{(4.3}\times103)+\text{(2.5}\times103)$

$\text{4.3}\times103=442.9$

$\text{2.5}\times 103=257.5$

$\text{442.9 + 257.5 = 700.4}$

$\boxed{\boxed{\text{Answer: 700.4}}}\checkmark$

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Answer 2

Answer:

7 x10²

Step-by-step explanation:

1. (4.3 x 103)+(2.5 x 103)

- you multiply the 4.3 and the 103, then you multilpy the 2.5 and 103

2. =442.9 + 257.5

- you add the 442.9 and the 257.5

3. =700.4

-you move the decimal to left so that the number is less than ten but more than 0

-the number of spaces you moved the decimal which in this case was two is the exponent

4. =7 x 10²