Julia begins with a Number of the Day warm up activity, followed by practicing 2 and 3 addition and subtraction equations, with and without regrouping, using base 10 drawings, expanded from ...

Let's explore addition and subtraction This collection contains curriculum-relevant videos, quizzes and games to help Year 6 and P7 Maths students with: mental addition strategies adding and ...

The answer will look like this. We can also use numbers instead of counters. This model shows 6 + 3 = 9. You can also use part-whole models to help with addition problems involving bigger numbers.

This video addresses Common Core Grade 2 Standard Operations & Algebraic Thinking: Represent and solve problems involving addition and subtraction. 03/01/2017 | Rating NR ...

Ellis showed a subtraction problem, performed both using the traditional regrouping, or borrow-and-carry, algorithm and using an example from the common core. Here’s a screenshot of the two methods.

Bring us your stories of adding and subtracting, with creative interpretations welcomed and encouraged. As always, we want you to really explore and push the theme beyond the most obvious examples.