Question

Tara bought a 1.8-acre lot. She is going to have sod put on 0.6 of the lot.

Part A
Which grids show the correct shading to model the multiplication?
A. 2 hundred grid models showing 8 columns shaded and 6 rows shaded. The intersecting area is an array that is 8 6.
B. 2 hundred grid models showing 16 columns shaded and 8 rows shaded. The intersecting area is an array that is 16 8.
C. 2 hundred grid models showing 6 columns shaded and 8 rows shaded. The intersecting area is an array that is 6 8.
D. 2 hundred grid models showing 18 columns shaded and 6 rows shaded. The intersecting area is an array that is 18 6.
Part B
How much of Tara’s lot will have sod? Enter your answer in the box.

acres

Part C
Use the drop-down boxes to explain how the model helps you find the product

Answer 1

Part c I think......

Answer 2

Part A: The grids that show the correct shading to model the multiplication is D. 2 hundred grid models show 18 columns shaded and 6 rows shaded. The intersecting area is an array that is 18 6.

Part B: The size of Tara's lot to be sod = 1.08 acres.

Part C: The model helps to find the product by multiplying the arrays.

The size of the lot Tara bought = 1.8 acres

The proportion that she would have sod put on = 0.6

= 1.08 (1.8 x 0.6)

The total number of grids = 200 (20 x 10)

The number of grids shaded in D = 18 x 6 = 108