Verified answer

Answer:

The dragonfly is heavier by 9300 ounces more than the bumblebee.

Step-by-step explanation:

To be able to understand this question, I will first explain about scientific notation of number.

Scientific Notation -  This is used to represent a very large number or a very small number and follows the format 1 x 10ˣ  where the 10ˣ  represents the movement of the decimal point.

Ex. 2500000

How its done :

• Determine Your Decimal Movement

(take note that the decimal point for whole numbers is located at the end)

• 2500000.   move the decimal point
• 25.00000   the decimal point moved 5 unit places so
• 25 x 10⁵      the 10 is now raised to 5  

or you can also do this

• 2500000.   start with finding the decimal point

• 2.500000    then moving it 6 unit places
• 2.5 x 10⁶       the 10 is now raised to 6

Conclusion: You can choose either of the two, they are both correct.

Now to answer the Question.

Let us apply what we have learned so far.

1. Bumblebee weighs 7 x 10² ounces

= 7 x 10²  is also the same as 700

• 7 x 10² (notice what number is 10 raised to)
• 700     since the 10 is raised to 2, it means there are 2 zeros after the decimal point

the bumblebee weighs 700 ounces

2. dragonfly weighs 1 x 10⁴ ounces

= 1 x 10⁴ is also the same as 10000

(since 10 was raised to 4, there are 4 zeros after the decimal point)

the dragonfly weighs 10000 ounces

comparing the weight of the two

10000 ounces is bigger than 700 ounces

* To get by how much the dragonfly is heavier than the bumblebee, we will subtract

* 10000 - 700 = 9300 ounces

Conclusion: The dragonfly is heavier by 9300 ounces more than the bumblebee.