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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...
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 worksheet is...
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 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
Reteach: Choosing the Method of Computation
In 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.
Curated OER
Formulae: Mental Tests
In this formulae worksheet, students find the value of a function, compute total cost, and simplify algebraic expressions. This four-page worksheet contains 30 problems.
Curated OER
Multiplying by 100
In this math worksheet, learners 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
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
Unit 22: Volume
For this volume worksheet, learners determine the volume of cubes, prisms, and assorted shapes. This three-page worksheet is designed for mental computation. Answers are provided beside each question. This three-page...
Curated OER
Mental Arithmetic Race
In this mental arithmetic race, students compute as many arithmetic problems as possible in a given length of time. Problems include whole and decimal numbers. Students mentally divide multiply, and add whole numbers and decimals. This...
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 learning exercise, 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
What is Less 1-10
For this group counting worksheet, students count each group and cross out items to make less. Students work towards counting backwards as a strategy to mentally compute "less."
Curated OER
A Shopping Spree!
In this adding prices of items worksheet, learners choose items and add their totals using mental math, paper and pencil, and the calculator.
Curated OER
Areas and Perimeters
For this area and perimeters worksheet, students compute the area and perimeter of rectangles and squares. This two-page worksheet contains approximately 30 mental problems. Answers are provided beside each question.
Curated OER
Time and Timetables
For this time and timetables worksheet, 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 worksheet contains approximately 25 problems.
Curated OER
Unit 6 Arithmetic: Multiplication of Decimals
In this multiplication of decimals activity, students complete 6 sets of problems. The first two sets of ten problems involve whole number computation. The final four sets involve decimal multiplication. There are a total of 59...
Curated OER
Arithmetic: Decimals, Fractions and Percentages
In this arithmetic worksheet, students convert fractions to decimals and percents. This two-page worksheet contains 30 problems. Many of the problems can be computed mentally. Answers are provided.
Curated OER
Top of the Heap
For this computation and mental math worksheet, students solve and complete 3 different types of problems. First, they color the animal on top yellow. Then, students color the animal in the middle brown. Finally, they color the animal on...
Achieve
Fences
Pupils design a fence for a backyard pool. Scholars develop a fence design based on given constraints, determine the amount of material they need, and calculate the cost of the project.
Achieve
Corn and Oats
How much land does a parcel hold? How much fertilizer does it take for a field of corn? Pupils answer these questions and more as they apply ratio reasoning and unit analysis.
Achieve
Yogurt Packaging
Food companies understand how to use math to their advantage. Learners explore the math related to the packaging and serving size of yogurt. They then use unit analysis and percent values to make decisions on the product development.