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Scholastic
Study Jams! + and - Without Regrouping
Addition and subtraction are essential skills for all young mathematicians. Explain the step-by-step process with respect to place value using these real-world examples. Focus is on numbers in the tens, hundreds, and thousands, making...
PHET
Make a Ten
Rate the resource as a perfect 10. Pupils use an interactive to help add and subtract numbers. They first explore how to express whole numbers using hundreds, tens, and ones, then explore how to add whole numbers by combining to make...
Curated OER
Using the Overhead and Algebra to Correctly Guess the Number
In this questing numbers worksheet, students use algebra equations to discover how the teacher correctly chooses the students' numbers each and every-time. A pencil, key, stamp, yarn, and overhead are needed for this activity.
Curated OER
Addition and Subtraction
In this addition and subtraction worksheet, students solve simple problems where the tens and ones place value columns are labeled. Worksheet is labeled as a sample from a subscription site.
Mangahigh
Mangahigh: Number: Add and Subtract Tens and Hundreds
Determine the sum and difference when adding and subtracting tens and hundreds.