Math Updates

In math, we have finished our chapter on addition and subtraction concepts, and are now moving onto tens and ones.  We spent a great deal of time exploring multiple addition and subtraction concepts.  It is important for them to “see” problems in different ways and understand the relationship between addition and subtraction, even if they have memorized their facts.  As we know, memorization is not the same as understanding.  We will continue to work on addition and subtraction on a daily basis throughout the year as we progress to more advanced problems (i.e. facts to 20 and multiple digits).  Please reinforce the following strategies/concepts with you child when they are completing their math homework.

Subtraction as Comparison: When your child has a subtraction problem such as 9 – 7 = ?, ask them to “compare” the two numbers to find the “difference.”  Help them look at the two numbers on the number line and see the difference or "hops between" both numbers.  You could also phrase it, "7 plus what equals 9?"  You can also say, “How many more is 9 than 7?”

Relating Addition and Subtraction: For several problems a week, have your child check their answers by doing the related addition or subtraction fact.  For instance, to check 8 – 5 = 3, do 3 + 5 = 8. 

Count up and back: Encourage students to count on or count back in their heads or on the number line so they can see the numbers and their relation to one another.

Use Doubles: Doubles are easier to remember because they can be easily visualized.  When given a problem such as 4 + 5 = ?, students can think 4 + 4, and 1 more, gives 9.