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Multiplication Statements
This lesson explains what a multiplication statement is and how to write one correctly. Students learn to identify factors and the product, connect equal groups and arrays to a multiplication sentence, and practice writing statements like 3 times 4 equals 12 from pictures and word problems.
Parts of a Multiplication Statement
A multiplication statement has three important parts.
- Factors: the two numbers being multiplied. In \( 3 \times 4 = 12 \), the factors are 3 and 4.
- Multiplication sign: the symbol \( \times \) that tells you the operation is multiplication. You can review how this symbol works in understanding the multiplication sign.
- Product: the answer you get after multiplying, shown on the other side of the equals sign. In \( 3 \times 4 = 12 \), the product is 12.
When you read \( 3 \times 4 = 12 \) aloud, you can say "3 times 4 equals 12" or "3 groups of 4 equals 12." Both readings describe the same statement.
Writing Multiplication Statements from Groups and Arrays
Multiplication statements almost always come from a picture or a real situation first. If you see 3 equal groups with 4 items in each group, you can write the statement \( 3 \times 4 = 12 \). The first factor tells you how many groups there are, and the second factor tells you how many items are in each group. For more practice turning pictures into number sentences, see groups and arrays up to 99.
The same idea works for an array, which is a neat arrangement of rows and columns. Look at the array below, which has 3 rows and 4 columns.
Because there are 3 rows of 4 dots, the multiplication statement is \( 3 \times 4 = 12 \). You could also count the dots by adding 4 three times, which connects back to repeated addition as multiplication: \( 4 + 4 + 4 = 12 \).
Turnarounds: Two Statements, One Product
If you turn the array on its side so it has 4 rows and 3 columns instead, you still get 12 dots, but the statement changes to \( 4 \times 3 = 12 \). Both \( 3 \times 4 = 12 \) and \( 4 \times 3 = 12 \) are correct multiplication statements for the same amount of dots. This is called a turnaround fact, and you can explore it further in turnarounds.
Practice Reading and Writing Statements
Example 1: A baker arranges muffins into 5 equal groups of 6. Write the multiplication statement.
There are 5 groups with 6 muffins in each group, so the statement is \( 5 \times 6 = 30 \).
Example 2: Fill in the missing product: \( 7 \times 3 = \, ? \)
Skip counting by 3 seven times gives 21, so the completed statement is \( 7 \times 3 = 21 \).
Example 3: A number sentence shows \( \, ? \times 4 = 8 \). What is the missing factor?
Since 2 groups of 4 make 8, the missing factor is 2, giving \( 2 \times 4 = 8 \).
When you are filling in worksheets full of multiplication equations, it always helps to picture the equal groups or the array behind each statement. If you get stuck, go back to skip counting or drawing the array before writing the final number sentence.