Question

use mental math to calculate 49 percent of 162

thanks :)

Answer 1

100% is an entire thing.
The whole amount is 100%.
Ok?

Answer 2

49% is very close to 50%.
If 100% is the whole amount, then 50% means what part of the whole?

Answer 3

1/2 but 162 is the whole amount my math question said so

Answer 4

Good.
50% is half.
49% is very close to half.
162 can be rounded down to 160.
To estimate 49% of 162, just do half of 160.
What is half of 160?

Answer 5

80

Answer 6

By mental math they mean an approximation.
They don't expect you to have an exact answer.
A good approximation of 49% of 162 is half of 160.

Answer 7

Exactly.
Good job!

Answer 8

thanks! i would have been hopelessly lost and confused

Answer 9

No no, exact answer is good for this one! :)
49% = 50% - 1%

You can easily calculate 50% and 1%, ya? ^^

Answer 10

The subtraction might be a little difficult mentally I suppose hehe.

50% of 162 = 81
1% of 162 = 1.62

So then 49% of 162 = (50% of 162) - (1% of 162) = 81 - 1.62

Answer 11

thanks :)