Find Area by Decomposing or Completing
Presentation
•
Mathematics
•
3rd Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
Laura Bonilla
Used 202+ times
FREE Resource
5 Slides • 16 Questions
1
Find Area by Decomposing or Completing
2
Find Area by Decomposing Rectangles
Step 1: Use a line to break apart the figure into two rectangles
Step 2: Find the area of each separate rectangle by multiplying the side lengths
Step 3: Add the areas together
3
Fill in the Blanks
Find the area of rectangle A. Write a multiplication equation with the answer to solve.
Type answer...
4
Fill in the Blanks
Find the area of rectangle B. Write a multiplication equation with the answer.
Type answer...
5
Fill in the Blanks
Find the area of the large figure. Add the areas together. 18 + 9
Type answer...
6
Fill in the Blanks
Find the area of rectangle C. Write a multiplication equation with the answer.
Type answer...
7
Fill in the Blanks
Find the area of rectangle D. Write a multiplication equation with the answer.
Type answer...
8
Fill in the Blanks
Find the area of the large figure. Add the areas together 18 + 15
Type answer...
9
Fill in the Blanks
Find the area of rectangle E. Write a multiplication equation including the answer.
Type answer...
10
Fill in the Blanks
Find the area of rectangle F. Write a multiplication equation with the answer.
Type answer...
11
Fill in the Blanks
Find the area of the large figure. Add the areas together 21 + 9
Type answer...
12
Fill in the Blanks
Find the areas of rectangle G and H then add the areas together to find the total area for the figure.
Type answer...
13
Find the Area by Subtracting
Step 1: Multiply the side lengths to find the area of the large figure.
Step 2: Multiply the side lengths to find the area of the small figure.
Step 3 Subtract the areas to find the area of the shaded part.
14
Fill in the Blanks
Multiply the side lengths to find the area of the large gray figure. Write a multiplication equation with the answer.
Type answer...
15
Fill in the Blanks
Multiply the side lengths to find the area of the small white figure. Write a multiplication equation with the answer.
Type answer...
16
Fill in the Blanks
Subtract the areas to find the area of the shaded figure 56 - 9
Type answer...
17
Fill in the Blanks
Multiply the side lengths to find the area of the large gray figure. Write a multiplication equation with the answer.
Type answer...
18
Fill in the Blanks
Multiply the side lengths to find the area of the small white figure. Write a multiplication equation with the answer.
Type answer...
19
Fill in the Blanks
Subtract the areas to find the area of the shaded figure 30 - 8
Type answer...
20
21
Find Area by Decomposing or Completing
Show answer
Auto Play
Slide 1 / 21
SLIDE
