Merry Havens

# How to eliminate decimals

Decimals are multiples of 1/10 …easy to transform!

For example…you’re given: **0.4 x 550**

and you think you have to multiply out and move the decimal over 1, just like you were taught. But! If you remember that** multiplying by 10 and dividing by 10 on the same side cancels ou**t…

so, it’s like multiplying by 1. Let’s just do it:

**.4 x 550 >>> .4 (x 10) x 550/10** is the same as **4 x 55** which one would you rather tackle…..**4 x 55** right.. **220!**

You get the same answer either way, but removing the decimal makes it easier for our brains.

Try another one: **.7 x 800** that’s the same as **7 x 80 **which is **560!**

Try some more:

**.8 x 120**

**.9 x 60**

**.3 x 120**

**80 x .3**

**110 x 2.7**

*Check your answers: 96, 54, 36, 24, 297