Curated OER
Money Marvels
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...
Mental Arithmetic
1-12 Times Tables
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.
Beacon Learning Center
Spotted Stones Linked Just Right
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.
New Zealand Ministry of Education
Addition and Subtraction Pick n Mix
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...
Curated OER
Subtraction Word Problems #1
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!
Illustrative Mathematics
Building toward fluency
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...
Curated OER
Smart Doubling
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.
Curated OER
The Part-adder 1
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.
Curated OER
21 Game (Self Esteem)
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"...
Curated OER
Mental Maths
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...
Math Salamanders Ltd.
Subtraction - Up to 20, Sheet 3
In this finding the differences activity, students subtract one-digit and two-digit from numbers to twenty. Students solve 40 problems.
Curated OER
Split a Factor
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...
Math 4 Children
Who Wants to be a Champion? - Comparing Numbers
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...
Curated OER
Let's Play "You're Thinking Of....."
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...
Curated OER
Multiplying a Number by 10
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.
Curated OER
Decompose a Factor
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...
Curated OER
Doubles
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...
DK Publishing
Real-Life Word Problems, Part 2
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...
Curated OER
Make a Ten
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...
Curated OER
Addition
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.
Curated OER
Counting the Ways
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.
Curated OER
Blueberries for Sal
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...
Curated OER
Mental Math: Subtract Tens English Learners 12.1
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.
Curated OER
Fast Facts
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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