Multiplication: The mathematical operation of repeated addition.
Factors: The numbers being multiplied together.
Product: The result of multiplying two or more factors.
Multiplication Facts: Basic multiplication equations that can be recalled quickly (e.g., 3×4=12).
Zero Property: Any number multiplied by zero equals zero.
Identity Property: Any number multiplied by one equals itself.
Commutative Property: The order of factors does not change the product.
• Zero Property: a × 0 = 0 (any number times zero is zero)
• Identity Property: a × 1 = a (any number times one is itself)
• Commutative Property: a × b = b × a (order doesn't matter)
• Repeated Addition: a × b = a + a + a... (b times)
• Patterns: Multiplication facts follow predictable patterns
• Memorization: Facts 0-5 should be memorized for fluency
- Repeated Addition: 3 × 4 = 3 + 3 + 3 + 3 = 12
- Arrays: Visual representation of rows and columns
- Groups: Equal groups of items (3 groups of 4)
- Number Line: Skip counting on a number line
- Memorization: Learning facts through practice
- Patterns Recognition: Identifying patterns in multiplication
| × | 0 | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 0 | 1 | 2 | 3 | 4 | 5 |
| 2 | 0 | 2 | 4 | 6 | 8 | 10 |
| 3 | 0 | 3 | 6 | 9 | 12 | 15 |
| 4 | 0 | 4 | 8 | 12 | 16 | 20 |
| 5 | 0 | 5 | 10 | 15 | 20 | 25 |
- All facts with 0 equal 0 (Zero Property)
- All facts with 1 equal the other factor (Identity Property)
- All facts with 2 are even numbers (doubles)
- All facts with 5 end in 0 or 5
- All facts with 4 are even numbers
Zero Facts
Any number × 0 = 0
Examples: 0×3=0, 5×0=0
One Facts
Any number × 1 = itself
Examples: 1×4=4, 5×1=5
Two Facts
Always even numbers
Examples: 2×3=6, 2×5=10
Five Facts
End in 0 or 5
Examples: 5×2=10, 5×3=15
5×0=
0×2=
3×0=
5×1=
1×2=
4×1=
4×2=
2×5=
2×2=
Zero Facts: 0×4=0, 5×0=0, 0×2=0, 3×0=0
One Facts: 1×3=3, 5×1=5, 1×2=2, 4×1=4
Two Facts: 2×3=6, 4×2=8, 2×5=10, 2×2=4
3×5=
3×2=
3×1=
4×3=
4×1=
4×2=
5×2=
5×5=
5×1=
Three Facts: 3×4=12, 3×5=15, 3×2=6, 3×1=3
Four Facts: 4×5=20, 4×3=12, 4×1=4, 4×2=8
Five Facts: 5×4=20, 5×2=10, 5×5=25, 5×1=5
Sarah has 4 boxes of crayons. Each box has 3 crayons. How many crayons does Sarah have?
Solution: 4 × 3 = 12 crayons
Tom has 5 bags with 2 apples in each bag. How many apples does Tom have?
Solution: 5 × 2 = 10 apples
A classroom has 3 rows of desks. Each row has 4 desks. How many desks are there?
Solution: 3 × 4 = 12 desks