Question

A bee flaps its wings about 82,800 times an hour, and a hummingbird flaps its wings about 28,800 times an hour.
About how many times faster does a bee flap its wings than a hummingbird?
Estimate using a single digit times a power of 10.
8×1043×104=101×100
or about 10 times faster
8×1043×104=101×101
or about 100 times faster
8×1043×104=2.67×101
or about 30 times faster
8×1043×104=2.67×100
or about 3 times faster

Answer 1

To compare how many times faster a bee flaps its wings than a hummingbird, we can simply divide the number of wing flaps of the bee by the number of wing flaps of the hummingbird.

First, let's find the number of flaps per hour:

- Bee: \( 82,800 \) flaps/hour
- Hummingbird: \( 28,800 \) flaps/hour

Now, calculate the ratio:

\[
\text{Ratio} = \frac{\text{Bee's flaps}}{\text{Hummingbird's flaps}} = \frac{82,800}{28,800}
\]

To simplify:

1. Divide \( 82,800 \) by \( 28,800 \):

\[
\frac{82,800 \div 28,800} = \frac{82.8}{28.8} \approx 2.875
\]

So, rounding it, we find that a bee flaps its wings about \( 2.875 \) times faster than a hummingbird.

Rounding \( 2.875 \) gives us approximately \( 3 \).

In terms of the options provided, the correct choice is:

**or about 3 times faster.**