Lesson 17: Make 10 to Add • Let’s look for patterns and think about making 10 as we add.

To add or subtract polynomials, add or subtract the coefi cients of like terms. Because adding or subtracting polynomials results in a polynomial, the set of polynomials is also closed under …

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Add/subtract with brackets Grade 3 Order of Operations Worksheet Find the solution. 1. (11- 4) - 3 =4 3. 6 - 3 +7 =10

Addition of integers can be modeled using counters. We will use red counters with a “+” sign for positives and blue counters with a “−” sign for negatives. Here we have the sum 2 + 3. There …

Whenever students get stuck on a problem in the future, knowing they can come back and make a number line builds confidence and adds another tool to their math toolbox.

This is what you must do when you add or subtract rational expressions. We seek the least common denominator, LCD, because this produces the easiest calculations.