How can you multiply 0.7 times 0.4 on a grid?

Answer 1

You could make each box on the grid be 0.1 wide and 0.1 tall. Then shade over 7 boxes to the left and 4 boxes up. Then when you count the boxes you will have the answer, which will be 28 boxes, which are 0.1 by 0.1, so 0.7*0.4=0.28.