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Worksheet
Curated OER

Mental Math: Adding 10s

For Students 1st
To develop mental math skills for adding 10s, learners read an example, solve one carefully scaffolded problem, and then complete 6 more independently. Pictures of 10-rods make the connection between sets of 10 and the corresponding...
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Lesson Plan
EngageNY

The Division Algorithm—Converting Decimal Division into Whole Number Division Using Mental Math

For Students 6th Standards
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...
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Worksheet
Curated OER

Mental Math: Subtract Tens, Problem Solving

For Students 2nd - 3rd
Subtracting by 10s is easy for your young learners with this worksheet! There are three questions to accompany a bar graph, and there's a space for learners to explain their answers. Encourage them to use mental math here! 
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Worksheet
Curated OER

Mental Math: Breaking Apart to Add

For Students 1st - 2nd
Develop mental math addition skills by breaking apart addends into 10s and extras. Worksheet has problem solving steps at the top of the page, and 8 practice exercises that lead to increasing independence using the process. 
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Worksheet
Curated OER

Easy Mental Multiplication

For Students 5th - 6th
In this math worksheet, students learn to multiply larger numbers by one or two digits mentally. Students read the simple techniques and then solve 25 multiplication problems using these mental math skills.
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Handout
Prince Edward Island

Fact Learning, Mental Computation, Estimation

For Teachers 4th - 6th Standards
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...
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Worksheet
Savvas Learning

How Many Hundreds?

For Students 2nd - 3rd Standards
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...
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Worksheet
Curated OER

Mentally Add Larger Numbers

For Students 2nd - 4th
Using what they know about adding 10s and 100s, learners attempt to mentally solve 18 addition problems. Each problem requires them to think of the nearest 10 or 100, add them together, then add the remaining units.
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Worksheet
Curated OER

Math Mammoth End of the Year Test - Grade 3

For Students 3rd
In this comprehensive diagnostic test worksheet, learners examine, study, calculate and solve 38 math problems. They work with a variety of basic math concepts and word problems.
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Worksheet
Scholastic

Look for Easy Numbers for E-Z Addition

For Students 2nd - 4th Standards
All kids learn differently. For some, mental math is the best and most efficient way to add a series of numbers. After viewing a few sample problems, learners find ways to add numbers to 10 before adding them all together, and then write...
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Worksheet
Curated OER

Early Mental Math: Practice

For Students 1st - 2nd
Pupils start from a given number and count forward by 1s, 2s, and 10s. They "make ten" in 4 addition problems, and add or subtract 2 in the rest. Finally, they circle the odd numbers in a list from 1-14.
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Worksheet
Curated OER

Speed Trials: Final Test

For Students 3rd - 5th Standards
How quickly can your third graders solve these 63 math problems? Ranging from addition, subtraction, multiplication, and division, you can use this resource to assess your students' mental math. Cut the activity into thirds to make the...
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Worksheet
DK Publishing

Addition Practice #2

For Students 2nd - 3rd Standards
Encourage young scholars to tap into their inner math-whiz as they add three and four-addend equations. The first 36 problems each have three addends (none over two-digit), and are written horizontally. Next, they complete eight more...
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Worksheet
Curated OER

Number Puzzles

For Students 1st - 2nd Standards
These math puzzles are sure to get your first and second graders thinking. Nine word problems about odds and evens, as well as greater than and less than, keep learners guessing. If you're working on mental math in your class, use these...
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Worksheet
Curated OER

Subtraction Word Problems

For Students 1st - 2nd Standards
Practice mental math using a worksheet full of subtraction word problems! First graders subtract slices of pizza, books from a shelf, and balls that are buried by a dog. They write the answer to each problem in the space provided after...
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Worksheet
Curated OER

Counting Up and Down

For Students 1st Standards
These number sequences are missing quite a few digits; can your scholars determine some of them? Because learners aren't filling in every blank, they must utilize mental math to determine only the few numbers indicated. They count...
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Worksheet
Curated OER

Multiplies of 8

For Students 3rd - 4th Standards
Master mental math using multiples of eight. It features several different types of multiplication problems, such as written equations, horizontal equations, and word problems. The 8 times table is at the top of the page for quick...
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Worksheet
Curated OER

Multiples of 8 #2

For Students 3rd - 4th Standards
How quickly can your third graders recite their eight times table? Help them with their mental math by focusing on multiplying by eight. After completing six number sequences, pupils solve word problems and multiplication sentences. A...
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Worksheet
Curated OER

Speed Trials

For Students 2nd - 4th Standards
Get those pencils moving with these timed multiplication drills! With numbers from 0 to 10, these sixty math problems are sure to challenge your learners' multiplication tables and mental math. Use this activity as a timed quiz in class,...
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Worksheet
Curated OER

Mental Math: Dividing Multiples of 10, 100, and 1,000

For Students 4th
In this dividing multiples activity, 4th graders solve 8 mental math problems dividing by a variety of different multiples of 10. Students solve 3 word problems.
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Worksheet
Maths Blog

Adding/Subtracting Whole Numbers in Your Head

For Students 2nd - 3rd Standards
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...
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Worksheet
Math Mammoth

Mental Math

For Students 6th
In this math activity, 6th graders solve the problems that ask them to use the correct order to calculate the solutions to the six sets.
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Worksheet
Mental Arithmetic

Number Bonds to 10

For Students K - 2nd Standards
First graders solve the sums up to 10 using the mental math strategy of number bonding. Thirty different addition facts on the worksheet allow for plenty of practice.
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Worksheet
Curated OER

Mental Math

For Students 5th - 8th
In this multiplication worksheet, learners use mental math strategies to multiply 2 digit numbers together. Students complete 7 problems.

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