a. To find the product 0.7 × 0.3, represent 0.7 by shading the first 7 columns of the grid. Then, using a different color, represent 0.3 by shading the first 3 rows of the grid.
b.The number of squares in the region where the shaded columns and rows overlap represents the product. Write a number sentence to show the product of 0.7 and 0.3.
c. How does the total number of decimal places in the product compare with the total number of decimal places in the two factors