Question

find 5.8×1.8 using partial products. draw an area model to show the partial products. use the area model to complete the chart to find the product. 5.8 1.8

Explanation:

Step1: Rewrite the numbers

Rewrite 5.8 as 5 + 0.8 and 1.8 as 1+ 0.8.

Step2: Calculate partial - products

The partial - products are:
$(5\times1)=5$, $(5\times0.8) = 4$, $(0.8\times1)=0.8$, $(0.8\times0.8)=0.64$.

Step3: Sum the partial - products

$5 + 4+0.8 + 0.64=10.44$.

Answer:

10.44