MathIsimple
Lesson 7-2: Multiplication & Addition/Subtraction Applications

Multiplication & Addition/Subtraction Applications

Apply multiplication with addition and subtraction in real scenarios through interactive stationery shopping activities. Learn to solve complex problems using multiple operations with proper order.

30-35 minutesOrder of OperationsShopping ScenariosComplex Expressions
Learning Scenario: Stationery Shopping

The Problem:

You need to buy 3 pencils at $2 each and 1 eraser for $3. How much money do you need in total?

Shopping Math Challenge

Step-by-Step Method:

Step 1: 3 pencils × $2 = $6
Step 2: $6 + $3 eraser = $9 total
Answer: You need $9 total
Check: Does this make sense?

Learning Activities

Master multiplication with addition/subtraction through interactive activities and real-world shopping scenarios

Knowledge Points Display
Activity 1
Learn multiplication with addition and subtraction with our friendly math teacher. Master combining different operations in real-world shopping scenarios.

Key Features:

  • Interactive operation combination
  • Step-by-step problem solving
  • Visual shopping scenarios
  • Progress tracking with milestones

Skills You'll Learn:

  • Order of operations: Multiply first, then add/subtract
  • Shopping math: 3 pencils × $2 + $3 eraser = $9
  • Complex expressions: 4×2+3 = 8+3 = 11
  • Real-world applications: Stationery shopping
Interactive Practice
Activity 2
Practice multiplication with addition and subtraction through stationery shopping scenarios. Help calculate total costs with multiple items.

Key Features:

  • Stationery shopping simulation
  • Interactive cost calculation
  • Order of operations practice
  • Real-world problem solving

Skills You'll Learn:

  • 3 pencils × $2 + 1 eraser × $3 = $6 + $3 = $9
  • 2 notebooks × $4 + 1 pen × $2 = $8 + $2 = $10
  • 4 markers × $1 + 1 ruler × $2 = $4 + $2 = $6
  • 5 stickers × $0.50 + 1 glue × $1 = $2.50 + $1 = $3.50
Examples Library
Activity 3
Explore various multiplication with addition/subtraction problems and practice solving them using different strategies.

Key Features:

  • Multiple problem types
  • Different solving strategies
  • Order of operations practice
  • Interactive problem solving

Examples:

  • Classroom: 6 students × 2 books + 3 extra = 15 books
  • Garden: 4 rows × 5 flowers + 2 extra = 22 flowers
  • Party: 3 tables × 4 chairs + 2 extra = 14 chairs
  • Store: 5 boxes × 3 apples + 1 extra = 16 apples
Order of Operations Guide: Step-by-Step

Operation Rules:

Rule 1: Multiply first

Always do multiplication before addition/subtraction

Rule 2: Then add/subtract

Add or subtract the results from multiplication

Rule 3: Check your work

Make sure your answer makes sense

Example: 3×2+3

Step 1: Multiply first

3 × 2 = 6

Step 2: Then add

6 + 3 = 9

Answer: 9

3×2+3 = 6+3 = 9

Shopping Examples

More Shopping Problems:

Pencils & Eraser: 3×$2 + $3 = $6 + $3 = $9

Notebooks & Pen: 2×$4 + $2 = $8 + $2 = $10

Markers & Ruler: 4×$1 + $2 = $4 + $2 = $6

Stickers & Glue: 5×$0.50 + $1 = $2.50 + $1 = $3.50

Real-World Applications:

Classroom Supplies: Calculate total cost for multiple items

Party Planning: 6 kids × 2 balloons + 3 extra = 15 balloons

Garden Planting: 4 rows × 5 flowers + 2 extra = 22 flowers

Store Inventory: 5 boxes × 3 apples + 1 extra = 16 apples

Ready for the next lesson?

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