Monday

December 22, 2014

December 22, 2014

Posted by **Anonymous** on Saturday, October 17, 2009 at 10:18am.

Would I multiply 10 5/8 times 1/3 to get the answer?

- Math -
**jim**, Saturday, October 17, 2009 at 10:43amLet's estimate the problem first.

Handy to check our thinking.

There are 3 tiles per foot, right?

And there are a bit over 10 feet to tile, at 3 tiles per foot, so our answer is going to be near 30 tiles.

If you multiplied 1/3 by 10, you'd get about 3 as an answer, so something is going wrong with that.

Suppose it was a 9-foot wall, and you were using 3-foot tiles. How many 3-foot tiles would you need to cover 9 feet?

You need to divide the space into the width of the tile.

This shows that you don't want to multiply; you need to divide. And dividing by 1/3 is the same as multiplying by 3. Let's look at that:

10 5/8 = 85/8

(85/8) * 3 = 255/8 = 31 7/8

A possible little catch here is: can you order 7/8 of a tile? In a real life situation, you'd buy 32, and just throw away the last piece.

- Math -
**Anonymous**, Saturday, October 17, 2009 at 11:05amThat is the part I was missing. Forgetting you can multiply be three instead of divide by 1/3. You certainly make problems make sense, thank you for your help.

- Math -
**jim**, Saturday, October 17, 2009 at 11:20amYou're welcome!

**Answer this Question**

**Related Questions**

MATH HELP PLEASE - The floor of a rectangular room is to be tiled with 1/3 foot ...

geometry - A carpenter has been hired to cover a 12-foot by 14-foot kitchen with...

math - If a room has a perimeter of 32feet how many square floor tiles with ...

math - decorator has 92 one foot square tiles to be laid around edge of 12 x 15 ...

math - You want to install kitchen floor tiles that each measure 12 inches by 12...

geometry - a 16 by 18 foot rectangular section will be covered by square tiles ...

math - given an 8 foot by 10 foot wall how many 6 inch square tiles would be ...

math - A square room has perimeter of 32 feet. How. Many many square floor tiles...

math - leah wants to put square floor tiles that measure one foot on each side ...

math (tiles) - Ms. Johen is making a rectangular mosaic on her wall. She wants ...