Related Facts
Grade 1 · Math · Subtraction · Nova Scotia, Canada
Lesson Summary
See how addition and subtraction are connected to each other.
Explanation
Addition and subtraction are like opposites. If you know that 4 + 5 = 9, then you also know that 9 − 5 = 4 and 9 − 4 = 5. These are called related facts or fact families. Learning one fact helps you know three more facts for free. This connection makes solving problems much faster.
Practice Questions
Q1: If 3 + 8 = 11, what is 11 − 8?
Answer: 3
Q2: If 6 + 7 = 13, what is 13 − 6?
Answer: 7
Q3: If 9 + 2 = 11, what is 11 − 9?
Answer: 2
People Also Ask
What is Related Facts in Grade 1 Math?+
Related Facts is a lesson in the Subtraction chapter of Grade 1 Math. It is part of the Nova Scotia, Canada school curriculum and covers key concepts that students need to understand at this level.
What grade level covers Related Facts?+
Related Facts is taught in Grade 1 as part of the Math curriculum in Nova Scotia, Canada.
How can I help my child with Subtraction in Math?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Subtraction topics.