Show me multiplication gridded boards show me bmsb the show me multiplication a4 gridded frame mini drywipe boards pack of 100 are very durable and ideal for educational purposesthese superb boards are printed both sides with a 10 x 10 multiplication grid one side has the numbers filled in the squares and the other side has the empty grid with the 1x 2x etc headings across the top and down the left hand side tough but lightweight a4 size 650 micron pvc mini drywipe whiteboards