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Name
3-6
Possible equation and
drawing are shown.
Show your work.
Make a drawing. Write an equation. Solve the problem.
1. Chase has some music CDs. 9 of them are
rock music. The other 8 are pop music. How
many CDs does Chase have?
17 total
rock
17
CDs
9
8
pop
9 + 8 = 17
label
Add. Use any method.
2.
68
+
35
_
103
3.
52
+
79
_
131
4.
84
+
86
_
170
Estimate and then measure each side.
Then find the distance around the triangle.
A
5. a. Complete the table.
Side
AB
BC
CA
Estimate Measure
Estimates
3 cm
may
3 cm
vary.
2 cm
3 cm
B
2 cm
3 cm
C
3
cm +
3
cm +
2
cm =
8
cm
6. Stretch Your Thinking Find two items in the classroom
whose lengths you estimate to have a difference of 3 cm.
Then measure each item. Answers will vary. Check measurements.
Item 1 Estimate:
cm
Measure:
cm
Item 2 Estimate:
cm
Measure:
cm
Difference between Item 1 and Item 2:
84
UNIT 3 LESSON 6
cm
Estimate and Measure with Centimeters
© Houghton Mifflin Harcourt Publishing Company
b. Find the distance around the triangle.