Jack's dad is tiling his shower. On one wall, he will use 9 rows of 14 tiles. The 4 center tiles in the top 2 rows will have a special design on them. How many of the tiles will not have a design of them?
9*14 = 126
4*2 = 8
126 - 8 = 118
I think it is 84
To find the number of tiles that will not have a design, we need to calculate the total number of tiles and then subtract the number of tiles with a design.
First, let's calculate the total number of tiles on one wall.
Jack's dad will use 9 rows of 14 tiles per row, so the total number of tiles on one wall is 9 x 14 = 126.
Next, we need to calculate the number of tiles with a design. Jack's dad mentioned that the 4 center tiles in the top 2 rows will have a special design on them. Therefore, the number of tiles with a design is 4 tiles/row x 2 rows = 8 tiles.
Finally, we can find the number of tiles without a design by subtracting the tiles with a design from the total number of tiles:
Number of tiles without a design = Total number of tiles - Number of tiles with a design
Number of tiles without a design = 126 - 8 = 118
Therefore, there will be 118 tiles without a design on the wall.