‘Naked’ Numbers But Not Before Discovering Patterns

The common core standards for first grade state that students must become fluent with adding and subtracting tens.  To promote fluency, students need to discover patterns and how they change numbers.  Only when students have examined patterns and become comfortable with them should they be given timed “naked number” problems to assess and improve their efficiency in recalling the patterns.  Finding the answer to a “naked numbers” problem needs to be merely a by product of knowing the pattern.

When trying to figure out how to teach fluency with adding and subtracting multiples of ten to first graders, I struggled to find resources to do this.  Because of the lack of resources, I developed these sheets for next week to lead students and their teachers into guiding discussions about patterns on the hundreds chart.  They are simplistic activity sheets but necessary.  I will be trying them out this week.  I am providing a link to them below.  If you would like to try out one of the lesson sheets, the preview file will give you a sample for free at TPT.

Discovering Patterns

Naked Numbers