Math Update: 10/23/23 - 10/27/23
Math
Last week, students used the strategies, “Decompose to Add Tens and Ones,” and “Compensation.”
When students use “Decompose to add Tens and Ones” they will break apart only one addend into tens and ones. Then they will add the tens to the first addend, then add the ones.
24 ----> 20 + 4
+ 35
20
+35
55 55+4 = 59
When students use “Compensation” they will take ones from an addend to make the other addend a ten.
37 + 16 = ?
+3 -3
40 + 13 = 53
Remember, the goal of this unit is to give students a variety of strategies that they are comfortable with. This will allow them to choose an efficient strategy depending on the situation or the numbers being added.
This week, we will be focusing on two-step word problems, which is a struggle for many students. The problems are broken down into two individual steps. Students continue to apply strategies they’ve learned to add two addends at each step.
Example:
You have 18 acorns and find 19 more. Your friend has 32 acorns. How many acorns do you and your friend have in all?
Step 1:
Me: 18 + 19 = 37
Step 2:
Me and my friend: 37 + 32 = 69