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...
Curated OER
Mental Money
Students access prior knowledge to round numbers and add decimals. For 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...
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Mental Math Methods
In this mental math worksheet, learners use mental math methods to solve problems. Students complete 1 addition, 1 multiplication, and 1 subtraction problem using these methods.
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.
Curated OER
Reteach: Choosing the Method of Computation
For this computation methods worksheet, students read about reasons for choosing various methods, read a sample problem and reasoning, then solve 4 additional problems related to the sample problem. A reference web site is given for...
Curated OER
Mental Math: Use the Properties-Reteach
In 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.
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Computation and Estimation
Learners read "Moosey Saves Money" and use mental math to determine if Moosey is saving any money. In this math computation and estimation lesson, students discuss the story in relation to saving money, recording in their math journal....
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Rice Cookies Addition
Fourth graders practice adding rice cookies. In this mental math instructional activity, 4th graders get into groups and call out numbers to each other to add mentally. Students use the rice cookies to show the answer.
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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.
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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...
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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.
Alabama Learning Exchange
Comparing Fuel Economy
Compute fuel economy and gas mileage. Why? So you can teach rates and ratios, of course! Middle schoolers calculate the rate of miles per gallon for various vehicles. They research each vehicle, its mileage per gallon, and cost per...
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.
Curated OER
Think of a Number
In this math worksheet, students engage in a mental math activity. Student think a number and follow several computations with that number and always come up with the answer 9. Students discuss why this happens.
Curated OER
Investigations into Estimations
Students gain the powerful tools of estimation, prediction, and averaging and discover the importance these tools have in daily living.
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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...
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Word Problem Exchange
Students discuss elements of word problems: key words, data, computation clues, and unnecessary information and use the four steps of problem solving to find a solution and check for reasonableness.
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Roll Seven!
Roll Seven is a fun and engaging dice game that encourages the use of mental math.
New Zealand Ministry of Education
Fraction Bar
Computing class members encounter use a digital learning tool called The Fraction Bar to multiply fractions with whole numbers. They do so by finding a given fraction of a number either on a number line or by calculating the answer with...
Curated OER
Multi-Digit Multiplication
Fourth graders practice mastering the ability to multiply multi-digit numbers utilizing rectangular arrays and a variety of mental math strategies. They model and illustrate meanings of multiplication and division of whole numbers and...
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The Nuts and Bolts of a Mathematical Expression
Fourth graders complete a worksheet that asks them to order operations within a mathematical expression. students evaluate the expressions in the correct order using mental math and paper. The results are recorded on the worksheet.
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Time and Timetables
In this time and timetables activity, students draw hands on a clock-face to show a determined time. They look at a timetable and compute the length of a journey. This four-page activity contains approximately 25 problems.
Curated OER
Uncle Bubba Is Dead!
Learners spend imaginary inheritance of $100,000 on a home and furnishings.
Curated OER
Out to Lunch
Fourth graders use their computation skills and a menu from a local restaurant to plan a lunch with a cost of $5.00 or less.
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