Lesson 9.2
Nome
Reteoch
COMMON CORE STANDARD CC.2.MD.3
Estimote Lengths ln
Centimeters
Meosure ond estimote lengths in
stondqrd units.
The ribbon is obout 8 centimeiers long. How con you find
lhe most reosonoble estimote for the length of the string?
I centimeter
ribbon
e{0.
slring
I
I
centimetersle
t
0 centimeters
Think: I centimeter is
Think: l0 centimeters is
not reosonoble becouse
the string is much
longer thon I cube.
not reosonoble becouse
the string is shorter lhon
the ribbon.
. The rope is obout 7 centimeters long. Circle the
best estimote for the length of the yorn.
rope
yorn
5 centimeters
9 centimefers
I t+
centimeters
2. The pencil is obout I 0 centimeters long. Circle the
best estimote for the length of the ribbon.
pencil
ribbon
or )o'
j^O o
a
e?eli
5 centimeters
R87
Reteqch
@ Houghton
9 centimeters
Mifflin Horcourt Publishing Compony
t
Z centimeters
Grode
2