Estimation 4: Sum and Difference
In this estimation worksheet, students read story problems, determine the correct operation, and mentally evaluate the problem by using compatible numbers or through the process of rounding. Students complete three multiple choice problems.
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Initial Fraction Ideas Lesson 23: Overview
Celebrate young mathematicians' ability to compare, add, and subtract fractions with this math review lesson. To demonstrate their newly acquired knowledge, children solve a series of fraction word problems, explaining their solutions in...
3rd - 6th Math CCSS: Adaptable
New Review Sums and Differences of Decimals
Sometimes dealing with decimals is so much easier than dealing with fractions. The ninth lesson in a 21-part module has the class consider situations when it might be easier to add or subtract fractions by first converting to decimals....
6th Math CCSS: Designed
Addition and Subtraction of Rational Numbers
Apply adding and subtracting integers to solving problems with rational numbers. Pupils use the rules for adding and subtracting integers to adding and subtracting rational numbers. Class members represent the problem with equations and...
7th Math CCSS: Designed
Integers: Addition and Subtraction
Young mathematicians construct their own understanding of integers with an inquiry-based math lesson. Using colored chips to represent positive and negative numbers, children model a series of addition and subtraction problems as they...
5th - 8th Math CCSS: Adaptable
New Review Writing Addition and Subtraction Expressions
Symbols make everything so much more concise. Young mathematicians learn to write addition and subtraction expressions — including those involving variables — from verbal phrases. Bar models help them understand the concept.
6th Math CCSS: Designed
Estimating Sums and Differences
Work on rounding, estimating, adding, and subtracting with a helpful math worksheet! Fifth graders study different sets of addition and subtraction problems, and after rounding each number to the leading digit, they estimate what the sum...
4th - 6th Math CCSS: Designed
Study Jams! Estimate Sums & Differences of Whole Numbers
Estimating is an essential skill used in everyday life. This presentation explains how to apply prior knowledge about rounding numbers to estimating sums and differences. Example problems and assessment include large numbers, making this...
4th - 6th Math CCSS: Adaptable