Multiplication Notes
SOL 4.7
1. The terms associated with multiplication are
factor
376
factor
 23
product
8,648
2. One model of multiplication is repeated addition.
Example: 4 X 3 = 4 + 4 + 4 = 12
3. Multiplying is Making Groups of a set number:
Example: 4 X 8 = 4 groups of 8 in each group.
4. Another model of multiplication is the “Partial Product” model.
24
3
12

Multiply the ones: 3  4 = 12
+ 60

Multiply the tens by the ones on the bottom: 3  20 = 60
72

ADD together
5. Multiplication with 2 or more digits by 2 or more digits.
Example:
24
3
12 
Multiply the ones: 3  4 = 12
+
60 
Put a 0 under Ones

Multiply the top tens’ digit by the bottom ones digit: 2  3 = 6
and put it in the tens place next to the 0.
72 
Add Both Numbers
6. FRONT END Multiplication
 multiply the front digits
 then complete the product by recording the number of zeros found in the factors.
523 
500
 31 
 30
15,000
This is 3  5 = 15 with 3 zeros.
You try… 681
 46


 _____
7. Compatible #’s Multiplication

replace factors with compatible numbers (Hint: Go to the Closest 0, 5, or 10)

then multiply
64 
65
 11 
 10
650
You try… 42
 19


 _____