Lesson 7
Homework
Activity 1
Complete the following basic and extended facts.
1. 7 +
= 16
2. 90 + 70 =
4. 7 + 8 =
5. 80 +
7. 60 + 70 =
8.
3. 700 + 900 =
= 150
+ 600 = 1,300
+ 800 = 1,500
6.
9. 6 +
= 13
Activity 2
Rewrite the problem in expanded form. Do not find the sum.
Model
1.
432
+ 161
400 30
+ 100 60
327
+ 21
2.
220
+ 100
3.
500
+ 102
2
1
Activity 3
Add using expanded addition. Regroup when necessary.
Then write the answer in standard form.
Model
1.
327
+ 21
2.
220
+ 100
3.
54
+ 29
4.
78
+ 13
37
+ 46
30 7
+ 40 6
70 13
10
30 7
+ 40 6
80 3
80 + 3
Answer: 83
Copyright 2010 by Cambium Learning Sopris West®. All rights reserved. Permission is granted to reproduce this page for student use.
Unit 1 • Lesson 7 33
Lesson 7
Homework
Activity 4
Use the bar graph to answer the following questions.
The Scatter Plots CD Sales
January–April
Number of CDs Sold
500
400
300
200
100
0
January
February
March
April
Month
1.
Suppose the Scatter Plots CD sales continue the same trend over the next
three months. How many CDs will they sell in July? 2.
If you were going to make a graph to show the CD sales from January to July,
what scale and interval would you choose? What does the first graph show?
3.
How would you change the scale and interval if the Scatter Plots CD sales
had only increased by 50 each month over the next three months?
Activity 5 • Distributed Practice
Add.
34 1.
7+9
2.
40 + 40
3.
600 + 600
4.
70 + 60
5.
80 + 20
6.
400 + 500
Unit 1 • Lesson 7
Copyright 2010 by Cambium Learning Sopris West®. All rights reserved. Permission is granted to reproduce this page for student use.