Number Talks!

posted Oct 24, 2016, 6:00 PM by Patrick Johnson
Students are practising mental math and sharing strategies for adding numbers accurately and efficiently. In this number talk, students were asked to add 49+8. When they got the answer, they were asked to find a 2nd or 3rd strategy for adding these numbers together. 

Afterwards, students shared their strategies with a partner and then the class. The whiteboard writing illustrates some of the strategies students tried. 

The goal of this number talk was for students to realize that 49 was 1 away from the friendly number 50 (groups of 5 or 10 are easier to work with). For example, you could add 1 to get to 50 then add 7 to arrive at the solution 57.