We are now beginning a
mathematics unit on Numbers to 1000. In
this unit, your child will:
·
Show a 3-digit number in different ways, using concrete materials,
pictures, words, and numbers.
·
Compare and order 2-digit and 3-digit numbers.
·
Skip count by 5s, 10s, and 100s forward and backward to 1000.
·
Skip count by 3s, 4s, and 25s forward and backward to 1000.
·
Estimate how many items are in a large collection by comparing it
to a known quantity. Example: Show ten buttons - If this is 10 buttons, how
many are in this big pile of buttons?
Here are some activities you can do at home to support this learning:
- Use
play money to model numbers and to develop understanding of trading or
grouping.
For example, show that $34 can be modeled as $300 + $40 + $2. Using
play bills for $1, $10, and $100 helps to
reinforce place value.
- Play
a number comparison game: Remove the tens and face cards from a deck of
regular
playing cards. Deal 3 cards to each
player. Each player uses the cards
to make the greatest possible
3-digit number. The person with the greater number
gets a point. Repeat. The first player to get
10 points is the winner. Play the
game again, this time making the
least number possible.
Students will also work on basic facts. They
will be using various mental math
strategies to help them recall the facts
quickly. They will learn to apply mental math
strategies such as :
- Doubles (Ex: If I know that 6+6=12,
then 7+6 is one more, so it would be 13).
- Commutative Property
(For 3+9, think 9+3. They give the same answer).
- Making
10 (Ex: 8+6 – Think 8 + 2 + 4; 8 + 2 = 10, then 10 + 4 = 14).
