How do you evaluate $1.5\times -0.21$ ?

Question

2096 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-18T08:04:43

$-0.315$

You are multiplying two decimal values.

To start, ignore the decimal points and multiply the numbers as you would normally:

$15 xx -21 = -315$

Count how many decimal places there were to start with:

$1color(blue)(.5) xx -0color(blue)(.21)" "larr$ there are $3$ places

Put the same number of places in the final answer:

$-0color(blue)(.315)$

How do you evaluate 1.5\times -0.211.5\times -0.21?