Word Study Lesson 21

The product of a given number and any other whole number.

ex. 3,6,9,12, and 15 are multiples of 3.

Numbers that are multiplied together to give a product.

ex. 7 x 3 = 21 (7 and 3 are factors)

The answer to a multiplication problem

ex. 7 x 3 = 21 (21 is the product)

Numbers added together to give a sum

ex. 2 + 7 = 9 (2 and 7 are addends)

The answer to an addition problem

ex 2 + 7 = 9 (9 is the sum)

The answer to a subtraction problem

If one thing is equivalent to another, it is the same as the other in amount or value.

• ex. 2 + 5 is equivalent to 10 -3, 
•      2/4 is equivalent 1/2

A written symbol that represents a number

What something is worth

Going in the same direction as the hands move on a clock

A line which a figure can be folded on so that both parts match exactly.

• ex.
• 

Some shapes have more than one...

• ex.
• 

Two lines that intersect to form right angles

• ex.
•  

• Lines that never intersect
• ex.
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Lines that cross at one point

• ex.
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A number sentence that says two expressions are equal.

ex. 12 - 5 = 3 + 4

400

$1.00

6

7

2 and 7

21

7 and 3 are factors