Question

MEDAL FOR RIGHT ANSWER!!!

use mental math to calculate 49% of 162

Answer 1

ok so you know your metric stuff right?

Answer 2

@mathmath333 @I_Always_Smiling @WOLF__ @rainbowhorse

Answer 3

79.38 is the answer

Answer 4

\[162\times.49\]
because its 49 over 100 which we write like so
\[49/100\]
now basically what the / means is 2 two things A its a fraction
and B. its division since the slash is used for both

Answer 5

whats metric stuff?

Answer 6

@bohotness

Answer 7

yes

Answer 8

@kittenlover731 can I have medal the answer is 79.38

Answer 9

\(49\%\)is same as \(50\%-1\%\)

so
\(50\%*162-1\%1*62\\=81-0.62=?\)

Answer 10

I gave you a medal for you answering half the answer but you still didn't tell me how to use mental math to solve it

Answer 11

thats the proper mental math technique i think

well \(50\%\) is same as\(\dfrac{1}{2}\) and \(1\%\) is same as \(0.01\)

so \(\dfrac{1}{2}*162-0.01*162\)

Answer 12

https://www.youtube.com/watch?v=YWHx0RsRNzI

Answer 13

@ballsyjr

Answer 14

@wwhitlock

Answer 15

@quin100

Answer 16

@Secret-Ninja

Answer 17

@misty1212

Answer 18

@littlebird

Answer 19

@jesstho.-.

Answer 20

@unklerhaukus

Answer 21

@marc

Answer 22

@mathmath333's technique is excellent,
(but there was a small mistake)

\[49\% \text{ of } 162\\
=49\%\times162\\
=(50\%-1\%)\times162\\
=\left(\frac12-\frac1{100}\right)\times162\\
=\frac{162}2-\frac{162}{100}\\
=81-1.62\\
=80-0.62\\
=79.38\]