Used in over 1,700 districts.

TEKS Math Standard: 3.5.D

determine the unknown whole number in a multiplication or division equation relating three whole numbers when the unknown is either a missing factor or product

Back to School Math Worksheets
Back to School Math Worksheets
In these math problems, the solution is already given. But another number is missing!
Gr 2-6
Spring Math Worksheets: Multiplication and Division
Spring Math Worksheets: Multiplication and Division
Sets of multiplication and division practice problems. But the unknown isn’t where you expect it to be!
Gr 3-5
Factors and Codes: First Names (Episode 2)
Factors and Codes: First Names (Episode 2)
Scrambled up somewhere in 161,000 is a first name. Can you find it!?
Gr 4
Factors and Codes (Episode 1)
Factors and Codes (Episode 1)
Let’s use factors to encode and decode words.
Gr 4
How Many Ways: Fractions Divide Equals 2/3
How Many Ways: Fractions Divide Equals 2/3
One equation. Digits one through nine. How many ways can you make it work?
Gr 5-6
How Many Ways: Fractions Multiply 2/3
How Many Ways: Fractions Multiply 2/3
How many different ways can you make this fraction multiplication statement true using only the digits one through nine?
Gr 5-6
How Many Ways: Fraction Equivalence
How Many Ways: Fraction Equivalence
How many different ways can you make this math statement true using only the digits one through nine?
Gr 3-5
How Many Ways: Times Equals Minus
How Many Ways: Times Equals Minus
How many different ways can you make this math statement true using only the digits one through nine?
Gr 3-5
How Many Ways: Order of Operations 1
How Many Ways: Order of Operations 1
How many different ways can you make this math statement true using only the digits one through nine?
Gr 5-6
How Many Ways: 2 Digit ÷ 1 Digit = 1 Digit
How Many Ways: 2 Digit ÷ 1 Digit = 1 Digit
How many different ways can you make this math statement true using only the digits one through nine?
Gr 3-4
Undoing Multiplication With Division
Undoing Multiplication With Division
Multiplication and division, natural foes, are constantly seeking to undo each other. Students will attempt to reverse the effects of multiplication by dividing once, twice, or even thrice!
Gr 3-4
Why Is Our Calendar So Weird!?
Why Is Our Calendar So Weird!?
Why are there 12 months? Why don’t weeks fit into months evenly? Why don’t weeks fit into the year evenly? What’s going on with the calendar!
Gr 3-4