Scholastic
Look for Easy Numbers for E-Z Addition
All kids learn differently. For some, mental math is the best and most efficient way to add a series of numbers. After viewing a few sample problems, learners find ways to add numbers to 10 before adding them all together, and then write...
Curated OER
Early Mental Math: Practice
Pupils start from a given number and count forward by 1s, 2s, and 10s. They "make ten" in 4 addition problems, and add or subtract 2 in the rest. Finally, they circle the odd numbers in a list from 1-14.
Curated OER
Mental Math for Adding Decimals
Fifth graders work in groups to practice adding decimals. In this adding decimals activity, 5th graders call out different money amounts to each other and mentally add the coins called out. Students take turns calling out and adding the...
Curated OER
Speed Trials: Final Test
How quickly can your third graders solve these 63 math problems? Ranging from addition, subtraction, multiplication, and division, you can use this resource to assess your learners' mental math. Cut the activity into thirds to make the...
DK Publishing
Addition Practice #2
Encourage young scholars to tap into their inner math-whiz as they add three and four-addend equations. The first 36 problems each have three addends (none over two-digit), and are written horizontally. Next, they complete eight more...
Curated OER
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...
Curated OER
Subtraction Word Problems
Practice mental math using a activity full of subtraction word problems! First graders subtract slices of pizza, books from a shelf, and balls that are buried by a dog. They write the answer to each problem in the space provided after...
Curated OER
Counting Up and Down
These number sequences are missing quite a few digits; can your scholars determine some of them? Because learners aren't filling in every blank, they must utilize mental math to determine only the few numbers indicated. They count...
Curated OER
Multiplies of 8
Master mental math using multiples of eight. It features several different types of multiplication problems, such as written equations, horizontal equations, and word problems. The 8 times table is at the top of the page for quick...
Curated OER
Multiples of 8 #2
How quickly can your third graders recite their eight times table? Help them with their mental math by focusing on multiplying by eight. After completing six number sequences, pupils solve word problems and multiplication sentences. A...
Curated OER
Speed Trials
Get those pencils moving with these timed multiplication drills! With numbers from 0 to 10, these sixty math problems are sure to challenge your learners' multiplication tables and mental math. Use this activity as a timed quiz in class,...
Curated OER
Mental Math: Dividing Multiples of 10, 100, and 1,000
In this dividing multiples activity, 4th graders solve 8 mental math problems dividing by a variety of different multiples of 10. Students solve 3 word problems.
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...
CK-12 Foundation
Problem Solving Plan, Mental Math: The Perfect Lemonade 2
Drink in this resource. Young problem solvers investigate a different way of looking at the problem of filling four liters of water from a three-liter cylinder and a five-liter cylinder. Isometric grids help with this understanding.
CK-12 Foundation
Problem Solving Plan, Mental Math: The Perfect Lemonade 1
Find the perfect amount of water for lemonade. Scholars solve the famous problem of measuring four liters of water using a three-liter container and a five-liter container. An interactive allows users to see each step of the solution.
CK-12 Foundation
Mental Math for Addition and Subtraction Equations: Marble Bag Collector
Don't lose your marbles as your learn about addition and subtraction equations. Pupils investigate the relationship between addition and subtraction by using an interactive. They drag different color marbles into a box and identify the...
CK-12 Foundation
Mental Math to Divide by Whole Number Powers of Ten: Bouncing Decimal Point
Five questions challenge mathematicians to divide whole numbers by powers of 10. A tool highlights how a bouncing decimal moves through the divisor. Question types include multiple choice and fill in the blank. A discussion question...
Curated OER
Krypto Math Game
Students play a math game. In this number sense and mental math lesson, students play a game where they use mental math to form equations that result in the target number required to win the game.
Math Mammoth
Mental Math
In this math activity, 6th graders solve the problems that ask them to use the correct order to calculate the solutions to the six sets.
Mental Arithmetic
Number Bonds to 10
First graders solve the sums up to 10 using the mental math strategy of number bonding. Thirty different addition facts on the worksheet allow for plenty of practice.
Curated OER
Playing a Math Game Can Enhance the Learning Experience
This fun and educational game will help your students develop their mathematics skills.
Curated OER
Mental Math: 5 a Day
This is a really cool math resource! There are nineteen different slides containing five math problems each. They are intended to be used as daily math warm ups and address skills such as, addition, problem solving, missing addends, word...
Houghton Mifflin Harcourt
Unit 2 Math Vocabulary Cards (Grade 5)
Twenty-eight flashcards make up a set designed to reinforce math vocabulary. Two styles of cards showcase either a bold-faced word or a corresponding definition card equipped with an example and labels. Terms include commutative property...
Curated OER
Mental Multiplication and Division
Students practice multiplication and division problems using mental math. They play the online game ArithmAttack to complete as many multiplications or divisions as possible in 60 seconds. Afterward, they complete a paper based follow up...
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