How do you evaluate (0.1246) ( - 3.72)?

2 Answers
Dec 14, 2017

-0.463512

Explanation:

When you have two numbers that seemingly have no operation symbol between them, this usually means multiplication, as in this case.

Note that you are multiplying a positive number by a negative number. This means that the answer will be negative as well.

All you have to do now is multiply!

0.1246*(-3.72)=-0.463512

Dec 14, 2017

Reworked solution

-0.463512

Explanation:

When multiplying two values, if the signs are the same then the answer is positive. If the signs are not the same then the answer is negative. So in this case the answer is negative.

Write as -(0.1246 xx 3.72)

If the decimals are giving you a problem you can use a sort of cheat.

Note that 0.1246" is the same as "1246xx1/10000

Note that 3.72" is the same as "372xx1/100

So we may write as: -(372xx1/100xx1246xx1/10000)

This is the same as: -(372xx1246xx1/1000000)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We will deal with the negative and the xx1/1000000 at the end.

1246xx300=373800
1246xxcolor(white)("d")70=color(white)("d")87220
ul(1246xxcolor(white)("dd")2=color(white)("dd")2492 larr" Add")
color(white)("dddddddddddd")463512

Giving -(463512xx1/1000000)

-0.463512