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Ten Pennies

For Teachers K - 6th
Students play logic and strategy games with pennies. In this pennies worksheet, students play one game called 'From counting to arithmetic', and one called 'Counting and mental math'.
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Computation and Estimation

For Teachers 3rd - 5th
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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Compare and Order Fractions

For Students 4th - 6th
In this fraction activity, students compare fractions using pictures and mental math, then order fractions from least to greatest and complete 2 test prep questions. Houghton Mifflin text is referenced.
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Equal Groups

For Students 2nd - 3rd
In this dividing by two word problem worksheet, students use pictures and mental math to problem solve. Students solve six problems.
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Representing the Unknown

For Teachers 6th - 8th
Student use mental math to solve linear equations. In this algebra instructional activity, students solve one and two steps equations. They write expressions using variables to identify the unknown.
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Counting on

For Students 1st - 2nd
In this addition activity, students use a number line or mental math to solve 20 sums. Example: "Gus Plus has 5 cubes. He collects 7 more. He now has ---." Students soon learn to hold the first number in their heads and count on.
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Find the Missing Products

For Students 3rd - 4th
In this multiplication worksheet, learners solve 40 problems in which two and three digit numbers are multiplied by single digits. Students are encouraged to use estimation to do mental math. This page is intended as an online activity,...
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Addition and Subtraction as Inverse Operations

For Students 3rd - 4th
In this addition and subtraction worksheet, students work with the inverse operations. They fill in the boxes in 8 examples using mental math. They look at the addition problems and fill in the blanks in the subtraction problem and vice...
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Addition

For Students 3rd - 5th
In this addition instructional activity, students solve 20, 3-digit addition math problems mentally. Students put their answers down on paper, but do not work out the problems on paper.
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Mental Division Year 4

For Students 3rd - 4th
In this finding the quotients in word problems worksheet, students divide two-digit and three-digit numbers by one-digit numbers and find the factors of numbers. Students solve 12 problems.
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Division Problems to Calculate Mentally

For Students 4th - 6th
In this division worksheet, students answer a set of 10 questions, trying to answer all questions "in their head." Answers are included on page 2.
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Choose the Operation and Method pg1

For Students 3rd - 5th
Being able to choose the correct operation to solve a math problem is a very important skill. In this math learning exercise, learners choose an operation and method, solve the problem, and explain the solution. One problem is solved and...
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Multiplying Decimals by 0.1, 0.01, 0.001

For Students 6th - 7th
In this decimal multiplication worksheet, students solve 40 problems in which a decimal number to the thousandth place is multiplied by either 0.1, 0.01 or 0.001. There are no examples.
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Top of the Heap

For Students Pre-K - K
In 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...
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Quadratic Functions - Mental Tests

For Students 9th - 10th
For this mental math worksheet, students calculate the answers to 20 quadratic functions problems on a sheet which includes the answers. They do not use calculators to find the answers.
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Add 29, 39, 49 To Any 2-Digit Number

For Students 4th - 5th
In this addition worksheet, students solve 18 problems in which the number 29, 39, or 49 is added to a two digit number. There are no hints or examples. Problems are in horizontal format for mental math.
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Multiplication Math Facts

For Teachers 4th - 6th
In this elementary worksheet, students use their multiplication tables to solve the problems and the use of mental math is encouraged.
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Basic Subtraction

For Teachers 3rd
In this elementary math worksheet, 3rd graders perform mental math and transfer the answers to the worksheet. This is ideal for the development of number sense.
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Loop Cards: Multiplication by 10 or 100

For Students 4th - 5th
In this math worksheet, students practice mental math as they multiply by 10 and 100 in a loop card game. Each student has a card and reads the question. The person with the correct answer responds, then asks the next question. All...
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Daily Subtraction

For Students 2nd - 3rd
In this math instructional activity, students find the answers that are given daily. They work on the mental math of performing subtraction.
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Pencil and Notebook

For Students 9th - 12th
In this secondary mathematics worksheet, students solve a problem involving the combined cost of a notebook and a pencil, which can be solved by mental math. The one page worksheet contains one problem with the solution. 
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Mental Arithmetic--Adding to Thousands

For Students 3rd - 4th
For this adding to thousands worksheet, students mentally add 12 problems as fast as they can without using paper and only writing down their answers. Students solve 3 additional addition problems and then explain what method they used...
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Addition

For Students 3rd - 4th
In this addition worksheet, learners mentally add together 12 math problems involving addition with 3 numbers. Students fill in the missing numbers in 3 equations.
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Addition

For Students 2nd - 3rd
In this addition worksheet, students, without using a pencil and paper, solve 12 addition problems with 3 single digit numbers each. Students fill in the missing numbers in 4 addition problems.

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