Curated OER
Mentally Add and Subtract 10 or 100
Don't let the title of this one fool you; scholars skip count only by 10 in this number sequence activity. They fill in missing numbers on a number line to complete each sequence, adding or subtracting 10. There are two addition problems...
Curated OER
Mental Math Ideas
For this mental math worksheet, students complete the multiplication and subtraction problems where they use the strategy "subtract all digits from 9 except the last one from 10". Students complete 26 problems.
Curated OER
Mental Math Methods
In this mental math worksheet, students use mental math methods to solve problems. Students complete 1 addition, 1 multiplication, and 1 subtraction problem using these methods.
Curated OER
Mental Math
In this mental math worksheet, students complete addition, subtraction, and multiplication problems using mental math strategies. Students complete 8 problems.
Curated OER
Cumulative Frequency - Mental Tests
In this measures of central tendency activity, quick-thinking pupils use mental math to find the mean, median, and range of samples. They use mental math to calculate subtraction problems. They complete 20 problems in which the answers...
Curated OER
Grandpa's Chocolates
It's fun playing a game of "Guess What's in the Jacket Pocket?" Students read the question using the concept of doubles using mental math. They then share their solutions with the class.
Curated OER
Using Number lines in Addition and Subtraction
Adding and subtracting can be done by counting on or counting down a number line. This presentation provides a complete demonstration and examples of how one can use a number line to solve double-digit addition and subtraction problems....
DK Publishing
Mentally Adding and Subtracting
If you're looking for basic practice problems for youngsters learning addition and subtraction skills, look no further! Scholars solve 30 equations by filling in a missing addend, subtrahend, or minuend in these horizontally-aligned...
Oddrobo Software
King of Math: Full Game
All hail the king! Young mathematicians put their skills to the test as they strive to become the king of math.
ABCya
Gobble Squabble
A Thanksgiving-themed interactive boosts addition, subtraction, multiplication, and division facts. Using the keyboard's arrows, players navigate a turkey through a maze, gobbling up as many berries as possible without getting tagged by...
Houghton Mifflin Harcourt
Unit 2 Math Vocabulary Cards (Grade 3)
A set of third grade math vocabulary cards include topics that range from addition properties to terms like estimate and fact family. Each sheet has two cards on it. The top half is the word printed in bold text, while the bottom is the...
Curated OER
Mental Math Skills
In this mental math worksheet, students use a number line to count backwards and forwards, add doubles, add and subtract one, and add one-digit numbers. Students solve thirty problems.
Curated OER
Mental Math: Subtract Tens: Reteach
In this subtraction instructional activity, 2nd graders use subtraction facts to help them complete the subtraction sentences. Students write in the missing numbers for each sentence and solve the problems. Students' objective is to...
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...
Math Salamanders Ltd.
Subtraction - Up to 20, Sheet 3
In this finding the differences worksheet, students subtract one-digit and two-digit from numbers to twenty. Students solve 40 problems.
DK Publishing
Real-Life Word Problems
Prepare your second graders for word problems with a straightforward review worksheet. Use it after a unit on addition and subtraction up to 100, or after you have worked on money math. A sample word problem prompts young learners to...
Curated OER
Picture Graphs
An innovative way to practice reading data, as well as the four operations! Three picture graphs prompt first graders to count marbles, books, and pets. They also solve addition and subtraction problems. Additionally, they work on...
Education Development Center
Geography of the Number Line
It's more than just numbers on a line, its an organizational, mental math machine to help learners understand the value of numbers. The tool is handy when introducing positive and negative integers to see their values and relationships....
DK Publishing
Subtraction Practice #2
Do your second and third graders need more subtraction practice? Use a worksheet to help them master their subtraction skills with two digit numbers. The first section involves straightforward subtraction problems, while the second...
Curated OER
Math: Navigating the World Around Me
Young mathematicians research and discuss real world math word problems and ways in which they apply math concepts in their everyday lives. They create a storyboard of a math word problem from which they create a slide for a multi-media...
Curriculum Corner
“I Can” Common Core! 3rd Grade Math
Help third graders make sense of the Common Core math standards with this simple checklist. By rewording each standard as an I can statement, children are provided with clear goals to focus on as they participate in math lessons.
Curated OER
Algebra: Addition and Subtraction Equations: Practice
In this addition and subtraction equations worksheet, students use mental math to solve the addition and subtraction equations. Students then answer two test prep questions.
Curated OER
Mental Subtraction Methods
In this math worksheet, students learn a strategy to mentally subtract a single digit number from a two digit number such as 53-8. Students follow the detailed instructions to subtract in 18 problems.
Curated OER
Moving-Math Hopscotch
Students engage in a hopscotch game where each square represents a number. In this mental math and movement lesson, students take turns playing traditional hopscotch, but add a mental math component where they add or subtract specific...