homework_remembering_te_grade_4-1zwawpi

2-7
Name
Date
Use the Algebraic Notation Method to solve
each problem. Complete the steps.
1. 7 ⋅ 53 371
53 = 50
+
3
7 ⋅ 53 = 7 ⋅ ( 50 + 3 )
7
= 350 + 21
= 371
2. 4 ⋅ 38
152
4
38 = 30
+
8
4 ⋅ 38 = 4 ⋅ ( 30 + 8 )
120 32
= +
= 152
Draw an area model and use the Algebraic Notation
Method to solve the problem.
Show your work.
© Houghton Mifflin Harcourt Publishing Company
3. Mr. Henderson needs to get plywood to build
his flatbed trailer. The flatbed is 8 feet by 45 feet.
What is the area of the flatbed Mr. Henderson
needs to cover with plywood?
360 square feet
8
45 = 40
+
5
8 ⋅ 45 = 8 ⋅ (40 + 5)
= 320 + 40
= 360
UNIT 2 LESSON 7 Algebraic Notation Method 41