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Curated OER
The Meaning of Whole Numbers
For this whole numbers worksheet, students fill in different charts asking about the place value of various whole numbers. Students complete 8 problems.
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Add Two-Digit Numbers
In this addition worksheet, students practice adding 9 two-digit addition math problems involving tens, ones and regrouping. Students solve the answer to 1 test prep question and fill in the circle for the correct answer from a multiple...
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Subtracting 2-Digit Numbers Mentally
In this subtraction worksheet, learners subtract 2 digit numbers from each other using mental math. Students complete 12 problems and 9 comparison problems.
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Calculator Activity: Ones, Tens, Hundreds
In this calculator activity worksheet, students learn to use a calculator to add numbers. Kids add the numbers in column A to column B and then look for the answer that matches in column C. One answer is missing and students must fill in...
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Three-Digit Addition
Students work with hundreds place value, create and manipulate three-digit addition problems, and add three-digit numbers.
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Addition
Looking for addition drills for your scholars to practice adding one and two-digit numbers? You've found it! Mathematicians examine an example before finding the sum of 16 equations, each of which involves one 2-digit addend and one...
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Easy Addition
Learnes practice an alternate way of carrying when doing addition. In this addition lesson plan, everyone applies an alternate algorithm when they need to carry when adding. They work from left to right instead of starting in the ones...
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Exercises: Counting by 10s
You've found six problems sure to help your class understand adding tens and hundreds. First they fill in a chart by adding 10s, then they make 100 in different ways. They then use a hundred chart to complete three different patterns,...
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.
Innovative Mobile Apps
Action Words
From asking to yelling, this app teaches action verbs through images. Users listen to each word and tap the picture that corresponds with that verb. Just touch the screen to get started!
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Count on Whole Tens
In this counting worksheet, students complete a set of 5 problems, adding a "whole ten" number to a 3-digit number, then complete 6 additional problems, adding 90 to given numbers.
Math Worksheets Land
Add and Subtract within 1000 - Step-by-Step Lesson
Three-digit numbers are the name of the game here! Scholars convert 456 to expanded form, then complete one addition and one subtraction problem. The equations are written vertically, and the addends produce a four-digit number. There is...
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Multiplication Grids: Double-Digit
Kids learn how to use the grid method to solve double by single-digit multiplication problems. They take each double-digit number into its tens and units, place it on the grid, add the multiplier, then solve the problem. There are two...
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What's Missing?
Add a challenge for your young mathematicians' adventures in double-digit addition. Instead of simply computing sums in the 9 problems, they work backwards to fill in blanks among the addends. Resource makes a terrific extension or...
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Two-Digit Addition With Regrouping
Second graders practice two-digit addition with regrouping. In this addition lesson, 2nd graders use craft sticks to solve two-digit regrouping problems. Students solve problems on the chalkboard.
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The Numbers Get Larger
Second graders examine how to use mental strategies for addition and subtraction. They look at part/whole strategies for multi-digit problems and define which one would be best used for a particular problem. They use tens frames to solve...
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Add Groups of Ten
In this addition worksheet, students add groups of tens and their remainders to determine the missing addends in the pairs of 2-digit problems and then find the sums. Students solve nine problems.
Math Salamanders Ltd.
Addition - Adding on Tens Sheet 1
In this adding on tens activity, students add multiples of 10 to given numbers. A reference website is given for additional activities.
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Addition: 3-Digit Sums (Carrying Tens)
In this addition practice instructional activity, students improve their math skills as they solve 30 problems that require them to add 2-digit numbers to 2-digit numbers
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Number Puzzles
These math puzzles are sure to get your first and second graders thinking. Nine word problems about odds and evens, as well as greater than and less than, keep learners guessing. If you're working on mental math in your class, use these...
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Standard written method for addition of two 3-digit numbers (1)
In this addition worksheet, learners learn how to add two 3-digit numbers. They then solve the 12 addition problems on the worksheet. The answers are on the last page.
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Adding With Whole Tens
In this addition worksheet, students use pictures of bars and numeric problems to add whole tens and complete addition problems. A website reference is given for additional activities.
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Carrying to Tens
in this addition worksheet, students read about carrying tens, then complete 13 problems, circling cubes as directed and solving. A website reference is given for additional activities.
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Deciding When to Regroup
For 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.