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Worksheet
Curated OER

Ways to Add

For Students 4th - 5th
In this addition worksheet, students learn several different options to add the numerals twenty-four and thirty. The options are models, mental math, a hundreds chart, or pencil and paper.
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Lesson Plan
Curated OER

Money Marvels

For Teachers 2nd
Second graders explore various combinations of coins and dollars that add up to make given totals. They complete five different studying stations, completing a worksheet at each center, and mentally perform calculations involving...
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Worksheet
abcteach

Simple Integer Addition

For Students 2nd - 4th Standards
Add to your collection of math resources with this skills practice worksheet. Offering dozens of addition problems with sums less than 100, this resource is a simple way to hone the basic skills of young mathematicians.
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Worksheet
Curated OER

Multiply One-Digits

For Students 2nd - 3rd Standards
In this finding the products learning exercise, students multiply one-digit times one-digit numbers to solve. Students solve 35 problems.
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Lesson Plan
Illustrative Mathematics

Using Benchmarks to Compare Fractions

For Teachers 3rd - 5th Standards
Introduce a new strategy for comparing fractions by analyzing Melissa's use of benchmarks. Walk the class through her process, calling on learners to explain their understanding of each step she took. Then practice this method on two...
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Worksheet
Math in English

Skip Counting

For Students K - 2nd Standards
Help young mathematicians take the next step toward fluent addition with a simple skip counting exercise. 
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Lesson Plan
EngageNY

Overcoming a Second Obstacle in Factoring—What If There Is a Remainder?

For Students 10th - 12th Standards
Looking for an alternative approach to long division? Show your classes how to use factoring in place of long division. Increase their fluency with factoring at the same time!
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Lesson Plan
Illustrative Mathematics

Double Plus One

For Students 4th Standards
Practice doubling with a straightforward worksheet. Learners double plus one each number in the table, and then answer a series of hypothetical math equations.
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Worksheet
Coloring Squared

Thanksgiving Pilgrim—Holiday Subtraction

For Students 1st - 2nd Standards
What's the mystery picture? Pupils solve the subtraction problems in each square. Then they use the key at the bottom to determine the color of the square. 
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Worksheet
Curated OER

Three Sets of Mental Math Problems covering Coordinates and Integer Values

For Students 8th - 9th
In this mental math worksheet, students solve sixteen problems given in three sets.  The problems are to be done without a calculator and they cover coordinates and integer values.  The solutions are provided.
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Lesson Plan
Curated OER

Liquid Killer

For Teachers 5th - 9th
Students explore number sense applications and discuss strategies for multiplication and division using mental math. For cross-curricular purposes, they explore causes and effects of inequality and social injustice. Students explore...
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Worksheet
Curated OER

Mental Methods

For Students 6th - 8th
In this mental methods instructional activity, students determine the correct answer when multiplying fractions, percents and decimals. They use mental math to solve problems.
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Lesson Plan
Curated OER

The Nuts and Bolts of a Mathematical Expression

For Teachers 4th
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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Lesson Plan
Curated OER

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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Lesson Plan
Curated OER

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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Worksheet
Curated OER

Compare and Order Fractions

For Students 4th - 6th
In this fraction instructional 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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Worksheet
Curated OER

Equal Groups

For Students 2nd - 3rd
In this dividing by two word problem instructional activity, students use pictures and mental math to problem solve. Students solve six problems.
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Lesson Plan
Curated OER

Representing the Unknown

For Teachers 6th - 8th
Student use mental math to solve linear equations. For this algebra lesson, students solve one and two steps equations. They write expressions using variables to identify the unknown.
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Worksheet
Curated OER

Counting on

For Students 1st - 2nd
For this addition worksheet, 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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Worksheet
Curated OER

Find the Missing Products

For Students 3rd - 4th
In this multiplication worksheet, students 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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Worksheet
Curated OER

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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Worksheet
Curated OER

Addition

For Students 3rd - 5th
In this addition worksheet, 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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Worksheet
Curated OER

Mental Division Year 4

For Students 3rd - 4th
In this finding the quotients in word problems learning exercise, learners 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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Worksheet
Curated OER

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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