Lesson 2
Homework
Activity 1
Write the number in expanded form.
Model293 Answer: 200 + 90 + 3
1.
75
2.
478
3.
290
4.
907
5.
555
6.
1,693
Activity 2
Write the number in standard form.
Model500 + 20 + 7 Answer: 527
1.
80 + 9
2.
400 + 0 + 6
3.
500 + 80 + 0
4.
600 + 60 + 2
5.
900 + 90 + 9
6.
1,000 + 0 + 0 + 9
Activity 3
Use the place-value chart to answer the following questions.
3
1.
2.
3.
2
9
0
0
3
4
1
7
0
8
One
s
Ones
Ten
s
Thousands
Hu
millndred
ions
T
mill en
ions
Mill
ions
H
thoundred
u sa
nds
T
e
tho n
u sa
nds
Tho
u sa
nds
Hun
dre
ds
Millions
7
9
What is the value of the digit 9? In which places are the zeros? What is the digit in the ten millions place? Activity 4 • Distributed Practice
Add. Try to find the sum mentally.
14 1.
9+1
2.
90 + 10
3.
7+7
4.
70 + 70
5.
6+2
6.
60 + 20
Unit 1 • Lesson 2
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