Question

use the model to find 38 × 45. first, find the area of each rectangle. then, find the total area. 38 × 45 =

Explanation:

Step1: Calculate area of yellow rectangle

$30\times40 = 1200$

Step2: Calculate area of cyan rectangle

$30\times5=150$

Step3: Calculate area of orange rectangle

$8\times40 = 320$

Step4: Calculate area of pink rectangle

$8\times5=40$

Step5: Calculate total area

$1200 + 150+320 + 40=1710$

Answer:

$1710$