1. Chapter 2 Supplemental Homework Resource
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Chapter 2 Supplemental Homework Resource
Lesson 2.1
Is means equals. Times as many as means the multiplication symbol X.
Lesson 2.2
First, multiply the basic fact. 8X2=16
Then, add the two zeros to the product
Lesson 2.3
Example: 5 X 8,000 = 40,000
In this lesson, you may have a basic fact that already has a zero.
5X8= 40
You still need to add the remaining three zeros to the product. The product will have 4 zeros.
Lesson 2.4
94 is between 90 and 100 so
4 X 90= 360 and 4 X 100= 400
472 rounds to 500

2. The expanded form of 14 is 10 and 4. 7X10=70 and 7X4= 28.
Lesson 2.5
The expanded form of 15 is 10 and 5
6 X 10= 60
6 X 5= = 90
Lesson 2.6
The expanded form of 14 is 10 and 4. 7X10=70 and 7X4= 28.
Add the two partial products together 70+28= 98.
Lesson 2.7
6 x 400 = 2,400
6 x 10 =
6 x = Add 2, =
$2,496
Lesson 2.8

3. Lesson 2.10 Lesson 2.11 Lesson 2.12 x 5 15,000 x 7 6 6,300
55 rounds to 60.
Estimate: 60 x 2= 120
Multiply the ones. Regroup if necessary.
Next, multiply the tens.
$23 x 8=
8 x 3= 24 *regroup the 2 tens
8 x20= = 184
Lesson 2.11
3,000 x
15,000
900
x 7
6 6,300
Lesson 2.12
Follow the order of operations
Put parentheses around multiplication problems.
(7x38) + (3x45) - 56=
( ) =
= 345
*Remember to multiple first, then add, then subtract.