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Repeated Addition
Multiplication
Fast Facts
Sentence to Array
Definitions
100
Write the multiplication expression as repeated addition, and solve. 2X2=
2+2=4
100
Convert the repeated addition into a multiplication sentence, and solve. 3+3=
3X2=6
100

8 x 8 =

8 x 8 = 64

100
Convert the multiplication sentence to an array, and solve. 2X4=
2 rows of 4=8
100
What is a product?
The answer to a multiplication problem.
200
Write the multiplication expression as repeated addition, and solve. 3X3=
3+3+3=9
200
Convert the repeated addition into a multiplication sentence, and solve. 4+4+4=
4X3=12
200

6 rows and 9 objects in a row.

6 x 9 = 54

200
Convert the multiplication sentence to an array, and solve. 3X5=
3 rows of 5 =15
200

What is a multiple of a number?

The product of that number and any whole number. 

300
Write the multiplication expression as repeated addition, and solve. 4X5=
5+5+5+5=20 or 4+4+4+4+4=20
300
Convert the repeated addition into a multiplication sentence, and solve. 5+5+5+5+5=
5X5=25
300

60 x 8 =

60 x 8 = 480

300
Convert the multiplication sentence to an array, and solve. 4X6=
4 rows of 6 =24
300
What is a factor?
One of the numbers being multiplied together in a multiplication problem.
400
Write the multiplication expression as repeated addition, and solve. 5X6=
5+5+5+5+5+5=30 or 6+6+6+6+6=30
400
Convert the repeated addition into a multiplication sentence, and solve. 6+6+6+6+6+6+6=
6X7=42
400

6 rows and 5 objects in a row.

6 X 5=30

400
Convert the multiplication sentence to an array, and solve. 6X5=
6 rows of 5 =30
400
What is the commutative property of multiplication?
The factors can be in any order, and you will always find the same product.
500

Write the multiplication expression as repeated addition, and solve. 80 X 8 =

80+80+80+80+80+80+80+80=640

8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8+8= 640


500

Convert the repeated addition sentence into a multiplication sentence, and solve. 40+40+40+40+40+40+40

40 x 7 = 280

500

__ x 9 = 810

90 x 9 = 810

500
Convert the multiplication sentence to an array, and solve. 7X7=
7 rows of 7 =49
500
When looking at an array, how do you know which factor is which in the multiplication sentence?
The number of rows determine the first factor. The number in each row determines the second factor.