Making 10 to Add

Upon our return from Thanksgiving break we began module 2 in math which focuses on an introduction to place value through addition and subtraction within 20.  At this point in the year, after finishing module 1, we hope to have 1st graders that are able to add fluently within 10.  Knowing those basic addition facts with sums to 10 is a building block that should be in place as we move forward to more complex addition strategies.  The quicker your child is able to recall those facts the better!  Especially important are the sums/partners of 10 i.e. 1 and 9, 2 and 8, 3 and 7, etc.  If your child could use extra practice with these facts consider playing the following game at home with a standard deck of cards!

As you can see from the homework this week, students are now using these skills to make a group of 10 to add since 10 is a "friendly" number.  When adding with three addends we're looking to circle the two addends that make 10 and then add.  For example, 6+4+5 would become 10+5.  Moving forward students are then training their thinking to make a group of 10 when adding with 9 or 8.  To get more of an understanding of this concept you can watch the following YouTube videos:

Making 10 to Add - Drawing a Picture Strategy

Making 10 to Add - Decomposing Strategy

Our children are really getting the hang of this skill!  Ask your child to explain this concept to you and I bet they'll be able to teach you just as they were able to teach their partners today!

As always, Reflex is also a great way for your child to practice their math facts as well.  You can download the app or go to REFLEX to login.