Math Learning Center
Addition Strategies
Help young mathematicians refer to simple addition strategies with a set of math posters. The pages feature ways to remember how to add zero to a number, how to determine if a number is odd or even, and making fast tens.
Curated OER
1 Less or 1 More
Complete these images with values one less and one more; young mathematicians fill in bunches of flowers, starting at a middle number and working their way to the right by addition and to the left by subtraction. For each flower they...
Curated OER
Developing Strategies for Addition and Subtraction
Primary graders develop strategies to assist them with addition and subtraction. They discover number combinations and numerical facts which enable them to add and subtract more effectively. Students use these techniques to complete...
Curated OER
Adding in Our Heads
A good presentation on adding two-digit numbers. Learners are shown how to partition the numbers before trying to add them in their heads. A frog is the featured teacher of the PowerPoint, and he leads viewers through many problems and...
Curated OER
More and Less
Mental mathematicians add and subtract 1, 10, and 100 from sets of numbers. Each set of one, two and three-digit numbers gives scholars a chance to practice their addition and subtraction skills. There are 62 whole numbers in all. What...
Curated OER
Something's Hiding!
Second graders practice finding out how many tens and ones blocks are hidden from a given total. They mentally perform calculations involving addition and subtraction to explain the meaning of the digits in two to three digit whole numbers.
Curated OER
Free Printables: Place Value
In this place value worksheet, students cut out the 10 arrows on the page, each of which contains a number between 0 and 9 and then three 0s after that number. The students then insert a decimal in the right spot to make the correct...
Curated OER
Deciding When to Regroup
In this addition worksheet, 2nd graders determine if they need to regroup or not in 3 word problems. Students circle their answers, yes or no, and write the tens and ones numbers in the blanks provided.
Curated OER
Adding With Regrouping
In this regrouping addition worksheet, 2nd graders add 4 problems together, use tens and ones models, if needed, and circle yes or no if they had to regroup or not.
Curated OER
Change a Digit
In this tens and ones instructional activity, 2nd graders add 4 math problems together and write the sums using 10s and 1s models as shown. Students change a digit in 2 math problems from 1 number to another number in the blanks provided.
Curated OER
Mental Subtraction Methods
In this subtraction worksheet, students subtract problems using mental math methods such as tens groups, comparing problems, helping numbers, and more. Students complete 7 sets of problems.
Curated OER
Two-Digit Addition
In this addition worksheet, 2nd graders solve 18 addition math problems with two-digit numbers. Students utilize the tens and ones models and the process of regrouping.
Curated OER
Whole Number Addition Level 8
In this math worksheet, students solve twelve whole number addition problems. Students add three-digit numbers by carrying to the tens.
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More Thousands
In this thousands worksheet, students fill in commas to numbers, read numbers, add numbers, and more. Students complete 7 sets of problems.
Curated OER
Mentally Add Two 2-Digit Numbers pg. 1
Mental math addition is the focus of this activity. Students apply a strategy outlined in the activity to find the sums. In this activity, students find the answers for twenty problems. Answers appear at the end.
Curated OER
Mentally Add Larger Numbers
In this addition activity, students solve problems in their heads. In this problem solving activity, students write answers to twenty problems.
Curated OER
Carrying to Tens and to Hundreds
In this math worksheet, students learn to add larger numbers, carrying 2 times to the tens and to the hundreds. Students study the detailed pictures and examples; there are no problems to solve on the page.
Curated OER
Rewrite to Add: Reteach
In this addition activity, students review two steps to rewrite addends. Students rewrite the addends and then add the eight problems.
Curated OER
Multiply in Parts
In this mathematics worksheet. students multiply ones, tens, and hundreds separately and add. Then they multiply in sections and add. Students also multiply tens and ones separately and add the results.
Curated OER
Fun Math 94
In this finding the sums worksheet, students add one-digit numbers and tens on a page with fun clip art next tot each problem. Students solve 15 problems.
Curated OER
Look for Easy Numbers for E-Z Addition
In this mental math worksheet, 2nd graders focus on using multiples of ten to make addition problems easier to solve. They look for numbers that add to 10, 20, 30, or other multiples of 10. They write about how finding the multiples of...
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.
EdHelper
Addition and Subtraction Using Place Value
In this addition and subtraction activity, students solve simple problems where the tens and ones columns of numbers are labeled for them. Students then solve 4 word problems. Worksheet is part of a subscription site with links and is...
Maths Blog
Adding/Subtracting Whole Numbers in Your Head
Exercise those mental math muscles! This worksheet contains 10 addition and 10 subtraction problems which require learners to compute sums or differences in their heads. A quick review at the top of the page provides a strategy based on...
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