Students in a grade 7 class were raising money for charity. Some students had a “bowl-a-thon”. This table shows the money that one student raised for different bowling times. Time (h) Money Raised ($) What patterns do you see in the table? How long would the student have to bowl to raise $72?

What is meant by “divisibility rules”? A way to divide numbers quickly by following a pattern. Why is it important? Divisibility rules help us find the factors of a number.

Copy down the following numbers Circle the ones that are divisible by 2. Place a square around the ones that are divisible by 5. Draw a triangle around the ones that divisible by 10.

A number is divisible by… 2 If the whole number is even 3 If the sum of the digits is divisible by 3 4 If the number formed by the last 2 digits is divisible by 4 5 If the last digit is a 5 or a 0 6 If the number is divisible by 3 and is even 8 If the number is divisible by 4 and the quotient is even 9 If the sum of the digits is divisible by 9 10 If it ends in 0

1)Choose 3 different colors. 2) Using one color, circle the numbers that are divisible by 2. 3) Using a different color, circle all the numbers that are divisible by 4. 4) Using your last color, circle all the numbers that are divisible by 8. Be able to discuss the following: Describe the patterns that you found.

Sort the following numbers based on the divisibility rules for 3 and 5 using both Carroll and Venn Diagrams. 6, 8, 10, 15, 18, 25, 26, 36, 40, 45, 120

Carroll Diagram Divisible by 3 Not Divisible by 3 Divisible by Not Divisible by

Divisible by 5Divisible by

Grade 6: Work on page 14 then Pizazz sheet Grade 7: Work on pages 8 then 9 and the Pizazz sheet for final review