EngageNY
The Division Algorithm—Converting Decimal Division into Whole Number Division Using Mental Math
Make math much simpler with mental math methods. The 16th installment in a series of 21 looks at ways scholars can apply mental math to convert division problems into easier problems with the same quotient. Multiplying or dividing both...
For the Teachers
$1 Math
Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math lesson. Using the coding formula listed, children learn to fluently estimate and calculate simple sums.
Prince Edward Island
Fact Learning, Mental Computation, Estimation
Need help with mental math in your classroom? This guide is full of tips, tricks, and examples to help the teacher encourage learners to use their brain instead of a calculator. Practice problems are included with reasons how to use...
EngageNY
Mental Math
Faster than a speedy calculator! Show your classes how to use polynomial identities to multiply numbers quickly using mental math.
Savvas Learning
How Many Hundreds?
Mental math skills are really important to develop. Kids practice metal computation by first adding the hundreds then the tens and ones. There are nine addition and nine subtraction problems to solve. This attractive activity is...
Curated OER
Factor Pairs
This presentation covers a lot of ground. Square numbers, metal math computations, commutative property, ordering positive and negative integers, factoring, and real world problem solving are all covered. Use over the course of several...
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...
Curated OER
Mental Math Counts
Students use mental math. They describe reasonable and unreasonable sums and differences. Students use mental math to find the sums and differences of addition and subtraction facts at random. They solve addition and subtraction facts...
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.
DataWorks
4th Grade Math: Multi-Step Word Problems
Solving word problems requires reading comprehension and math computation. Through an interactive slideshow presentation, fourth graders observe and follow each step toward solve multiplication and division word problems.
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...
Houghton Mifflin Harcourt
Unit 8 Math Vocabulary Cards (Grade 3)
A set of 9 math vocabulary cards prompts young mathematicians to master division concepts. The top half of each sheet contains the word printed in bold text, while the bottom half has the definition card.
Curated OER
Multiplying by 100
In this math worksheet, students learn the tricks to multiply any number by 10, 100 or 1000. There are 75 problems on 3 pages, both written horizontally and vertically with instructions and picture illustrations to help students.
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...
Curated OER
Mental Money
Students access prior knowledge to round numbers and add decimals. In this mental math lesson, students share the book Betcha and calculate estimates for three jars based on the book. Students calculate money answers based on coins...
Curated OER
Take Math Shopping!
Percents, estimation, and comparative analysis become more understandable when they are used in-context at the grocery store.
Curated OER
Mental Math: Use the Properties-Reteach
For this mental math reteach worksheet, students review the commutative, associative and distributive properties, then complete a set of 13 problems. A reference web site is given for additional activities.
Curated OER
Two-Digit Subtraction With and Without Regrouping
Second graders subtract two-digit numbers. In this mathematics lesson, 2nd graders subtract both with and without regrouping. Students use manipulatives and place value mats to assist in problem solving.
Curated OER
Mental Math: Addition and Subtraction
Fourth graders exercise their minds in completing mental math skills of adding and subtracting by making multiplies of ten. They compute problems involving multiplication and division of whole numbers and addition and subtraction of...
Curated OER
Rice Cookies Addition
Fourth graders practice adding rice cookies. In this mental math lesson, 4th graders get into groups and call out numbers to each other to add mentally. Students use the rice cookies to show the answer.
Illustrative Mathematics
Building toward fluency
Here is a great learning task that focuses on the development of areas in computational fluency including strategies in mental math. Young learners are guided through a list of addition expressions that help them visually understand the...
Curated OER
Horizontal Addition
Here are four examples of double-digit horizontal addition. Learners are shown how to compute numbers horizontally, by first adding the tens and then the ones columns and then adding them both together. This is a great way to boost...
Curated OER
Fun Figures
In this mental math worksheet, students solve 4 problems pertaining to scoring points in a target game. Students compute game scores mentally to answer each story problem.
Curated OER
Mental Math
Pupils participate in an online computation game. In this computation lesson plan, students practice simple computations and use an internet site to review addition and subtraction facts.