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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
Mental Arithmetic

1-12 Times Tables

For Students 2nd - 4th Standards
Support math instruction with a 30-problem arithmetic learning exercise that lends its focus to times tables. Leaners practice 1 through 12 with a straightforward math drill.
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Lesson Plan
Beacon Learning Center

Spotted Stones Linked Just Right

For Teachers 1st - 2nd Standards
Discover how to play the game of dominoes using mental math skills to solve equations that earn points. Pupils become fast critical thinkers in determining which unknown addend tally up points in their favor.
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Lesson Plan
New Zealand Ministry of Education

Addition and Subtraction Pick n Mix

For Teachers 2nd - 4th Standards
Teach your class how to mentally solve whole number addition and subtraction problems using compensation from tidy numbers including equal additions. They use appropriate recording techniques and predict the usefulness of strategies for...
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Worksheet
Curated OER

Subtraction Word Problems #1

For Teachers 2nd - 3rd Standards
Practice subtraction skills and word problem strategies with your second graders. After reviewing the example at the top of the page, learners solve 14 word problems involving subtraction. A great way to practice mental math!
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Activity
Illustrative Mathematics

Building toward fluency

For Teachers 2nd - 3rd Standards
Here is a great learning task that focuses on the development of areas in computational fluency including strategies in mental math. Young learners are guided through a list of addition expressions that help them visually understand the...
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Lesson Plan
Curated OER

Smart Doubling

For Teachers 2nd
Second graders use mental math in calculations involving addition and subtraction. They study doubles facts to work out addition problems mentally using part and or whole reasoning.
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Lesson Plan
Curated OER

The Part-adder 1

For Teachers 2nd
Second graders investigate the addition of whole numbers. They mentally perform calculations involving addition and subtraction. They make sensible estimates and check the reasonableness of answers.
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Lesson Plan
Curated OER

21 Game (Self Esteem)

For Teachers 2nd - 6th
Here's a simple math game that two people can play together. The first player says the number one or two. Then, the other player says the next one or two consecutive numbers. The goal of the game is to be the player who says "twenty-one"...
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Worksheet
Curated OER

Mental Maths

For Teachers 2nd - 4th
In this counting worksheet, learners complete 22 fill in the blank problems where they are given a starting number and count by 1's, 2's, and 10's. Next. students answer 12 fill in the blank addition or subtraction problems where they...
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Worksheet
Math Salamanders Ltd.

Subtraction - Up to 20, Sheet 3

For Students 2nd - 3rd Standards
In this finding the differences activity, students subtract one-digit and two-digit from numbers to twenty. Students solve 40 problems.
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Worksheet
Curated OER

Split a Factor

For Students 2nd - 4th
Take the mystery out of multiplicaton with worksheets like this one. Learners find a mental math strategy for more difficult equations by splitting a factor, multiplying out the terms, and adding the products. An example explains this...
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PPT
Math 4 Children

Who Wants to be a Champion? - Comparing Numbers

For Teachers 2nd - 3rd Standards
Some excellent practice in mental math, and comparing numbers, awaits your class in this engaging Jeopardy-style game. They can earn bronze, silver, and gold medals by answering questions correctly. The categories include comparing...
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PPT
Curated OER

Let's Play "You're Thinking Of....."

For Teachers 2nd - 3rd
A simple, yet effective, whole-class game is presented here. Learners each have a small whiteboard or piece of paper. They write down the numbers 1 - 20, then must use mental math to circle the appropriate answer when the teacher gives...
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PPT
Curated OER

Multiplying a Number by 10

For Teachers 2nd - 4th
A cheery presentation on multiplying whole, and decimal numbers by 10. Learners are coached to simply add a zero to the number which is being multiplied by 10. An excellent way to pass along one of the all-time best mental math tricks.
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Worksheet
Curated OER

Decompose a Factor

For Students 2nd - 5th
Mental multiplication just got easier! Clue your class into this multiplication shortcut as they decompose factors and add smaller products. For the first set of problems, they read the instructions, view an example, and then break down...
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Worksheet
Curated OER

Doubles

For Students 1st - 2nd
These dragons work as math machines as scholars multiply numbers using given functions, which remain the same for these: double it. Using an example as their guide, learners double three whole numbers, none of which exceed 11, for each...
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Worksheet
1
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DK Publishing

Real-Life Word Problems, Part 2

For Students 2nd - 4th Standards
Are you looking for word problems to fit into your Common Core math lesson? Use this resource to assess your third graders' problem-solving skills. They read 14 word problems involving multiplication and division, and write the answers...
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Lesson Plan
Curated OER

Make a Ten

For Teachers 1st - 2nd
Youngsters mentally perform calculations involving addition and subtraction. They solve various addition and subtraction word problems using mental math and counters, write their own number stories, and solve various examples...
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Worksheet
Curated OER

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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Worksheet
Curated OER

Counting the Ways

For Students 2nd - 3rd
In this number sense worksheet, students use three ways to show a number: drawing a picture, making a grid or writing an addition sentence. There are 6 problems.
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Lesson Plan
Curated OER

Blueberries for Sal

For Teachers K - 2nd
Students read the book "Blueberries for Sal" and complete various computation math activities with blueberries. In this computation lesson, students complete number sentences, play guessing games, and solve story problems using...
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Worksheet
Curated OER

Mental Math: Subtract Tens English Learners 12.1

For Students 2nd - 3rd
For this ESL math vocabulary worksheet, students learn the term "boxes of ten". Students write a word in each of 2 sentences to match the picture. Students also illustrate this sentence: Stars come in boxes of ten.
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Lesson Plan
Curated OER

Fast Facts

For Teachers K - 5th
Ever use the inner circle/outer circle method of learning? Placing learners in a stationary inner circle and a rotating outer circle, they roll a die and attempt to be the first to call out an addition or multiplication equation with the...

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