Measurement Continued and Trying Out Subtraction

We began measurement last week looking at measuring with centimetres. This week we will spend more time becoming more familiar with recognizing how big (or small!) a centimetre is.  We will also continue practicing measuring using a ruler.  More practice at home using a ruler or measuring tape would be helpful. Please remind your child that when they measure they should start from the 0 point on a ruler, or if they choose a different starting point, they must count the number of hops they make from one centimetre to another to find out the actual measure.  And, they must remember to say (and record when writing a measurement down) the unit of measure, ie., centimetres. If they measure something and just say or write "6", that's not a measurement. They must say the units: 6 cm. I will be talking about that this week in class.  Please check out the measuring activities available in the "Websites" tab above.

Continuing to practice subtraction facts will be important as well as we begin to review subtraction and subtraction with regrouping.  In Grade 3 we are responsible for addition and subtraction of numbers to 1000.  As we look at subtraction, please do not forget to continue practicing addition facts as well since one of the mental math strategies for subtraction is "think addition".

If you click on the link below, you can watch a video that demonstrates subtraction with regrouping with numbers and Base Ten blocks.  Watching this several times and talking about it with you may be helpful to your child.

Subtraction with Regrouping


Keep up with skip counting practice as well since we'll be starting multiplication soon :-)

Skip count by 2, 5, and 10 starting at any multiple of each number (ex., for 2: 2, 4, 6, 8, 10, 12, etc.; for 5: 5, 10, 15, 20, etc.)

Have a great week!