EngageNY
Divisibility Tests for 3 and 9
Who knew the sum of a number's digits gives such interesting information? The 18th installment of a 21-part module has scholars investigate division by three and nine. After looking at several examples, they develop divisibility tests...
West Contra Costa Unified School District
Divisibility Rules Justified
How do you know if a number is divisible? Instructors first prove the divisibility rules for three and four and then class members use this modeling to prove given divisibility rules for eight and nine either individually or in groups.
Del Mar College
Divisibility Rules
There's a lot to remember when it comes to math concepts. Help scholars get a head-start to learning division with a reference page offering divisibility rules for the numbers two, three, four, five, six, eight, nine, and 10.
Curated OER
Single Digit Horizontal Division by 9's
Young scholars practice their math skills as they solve 48 problems that require them to divide by the number nine.
Curated OER
Division Facts: 9's (E)
In this division facts worksheet, 4th graders improve their division skills by dividing the given number by 9. Students solve 100 problems.
Curated OER
Division Facts: 9's
In this division worksheet, 3rd graders find the quotients in 100 horizontal division problems that have 9 as a divisor. They divide numbers up to 108 by 9 as they practice their facts.
Curated OER
Practice Dividing by 9
In this dividing by 9 worksheet, students use the table for 'Raul's Book Collection' to help them solve the division word problems that utilize the number 9.