1. Strategies for Success
The way that we teach math through Investigations is very different than the way that we learned it when we were in school. It is very important that your child shows his or her work in the way that we are teaching in class in order to ensure success. Hopefully this handout with help you assist your child! 
Addition
Subtraction
Add by Place/Break Apart
Example: = ____
= 500
= 110
5 + 2 =
So: = 617
Draw a Picture
Subtract in parts
Example: 342 – 275 = ____
342 – 200 = 142
142 – 70 = 72
72 – 5 = 67
Subtract Back on a Number Line
Example: = ____
Count the hundreds first, then the tens and finally the ones.
Total: 350
Starter Problem
Example: = ____
= 575
= 615 =
- 100
- 25
125
150
250
Think ADDITION…Jump forward on a number line!
Example: = ___ same as: ___= 250
= 125
Number Line
Example: = ____
+ 100
+ 25
+ 200
+ 20
125
250
145
345
365