15.By counting squares, estimate the
area of the given figure. (Figure
drawn on a graph paper) *
Answers
Answer:
© Harcourt
RW154 Reteach
Estimate Area
The area of a figure is the number of square units needed
to cover the surface of the figure. You can use square units
to estimate the area of a figure.
To estimate the area of a figure:
• count the number of full squares,
• count the almost-full squares, and
• count the half squares.
Do not count squares that are less
than half full.
Estimate the area of the figure.
Add to estimate the total area: 5 1 2 -
8
The area is about 8 square units.
Estimate the area of each figure. Each square is 1 square unit.
Possible estimates are given.
1. 2.
Full squares: Full squares:
Almost-full squares: Almost-full squares:
Half squares: Half squares:
Total estimate: square units Total estimate: square units
3. 4.
13 square units square units 15
5 full squares 1 almost-full:
Count as full
squares.⁰
4 half squares:
Two half squares
equal one whole
square. So,
4 2 -
2.
1 less than
half-full: Do
not count.
Name
LESSON 29.1
1 square unit
about 1 square unit
square unit 1
2
about square unit 1
2
