Chapter 4 :Addition and Subtraction Relationships within 10
Essential Question: How does knowing addition help you subtract?
Lessons :
4-1 Related Subtraction Facts
4-2 Relate Addition and Subtraction
4-3 Fact Families through 10
4-4 Think Addition and Subtraction
4-5 Check by Adding
4-6 Problem Solving : Use a Model
4-7 Find Missing Addends
4-8 Subtract to Compare
4-9 Solve Comparison Word Problems
Math Vocabulary :
related subtraction facts
related addition and subtraction facts
fact family
related facts
difference
count on
bar model
missing addend
model
how many more
how many fewer
more
fewer