Curated OER
Two-Digit Subtraction With and Without Regrouping
Second graders subtract two-digit numbers. In this mathematics lesson, 2nd graders subtract both with and without regrouping. Students use manipulatives and place value mats to assist in problem solving.
Pedago Net
Math Games Using Dice and Cards to Promote Mental Strategies
Develop mental math skills using these fun partner games. Covering basic operations, each one offers differentiation options, extension ideas, and clear directions. Dice or cards is all you'll need to keep kids' attention as they...
Curated OER
10 More or 10 Less?
Take a rocket to the stars with using a math worksheet. Here, four sets of alien saucers, moons, rockets, and stars prompt young learners to match numbers with one more or ten more. Color the pictures for extra fun when students are...
Geography 360°
Exponents
Don't let the rules overrule the lesson. Mental math steps in and helps learners understand exponent patterns. The material focuses on the introductory problems of exponents, such as simplifying expressions. Teacher guides are...
Education Development Center
Thinking Things Through Thoroughly
Problem solving is a skill of its own. Learners use a variety of problems to encourage mental math and logic to get the correct answer. Guiding questions are provided along the way to encourage the right way of thinking to help tackle...
Curated OER
Mental Math: Add Tens Practice 10.1
In this adding tens instructional activity, learners solve 11 problems in which tens are added. Students may use a basic fact to help. Example: 2 tens + 1 ten.
Education Development Center
Geography of the Number Line
It's more than just numbers on a line, its an organizational, mental math machine to help learners understand the value of numbers. The tool is handy when introducing positive and negative integers to see their values and relationships....
Curated OER
Cumulative Frequency - Mental Tests
In this measures of central tendency activity, quick-thinking pupils use mental math to find the mean, median, and range of samples. They use mental math to calculate subtraction problems. They complete 20 problems in which the answers...
Mental Arithmetic
Number Bonds to 10
First graders solve the sums up to 10 using the mental math strategy of number bonding. Thirty different addition facts on the instructional activity allow for plenty of practice.
Curated OER
Mentally Add Larger Numbers
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.
Curated OER
Beginning to Add Decimals Mentally
In this addition worksheet, learners solve ten math problems in which they add a single digit number and a decimal number. Students solve these problems in their head and write the answers in the boxes. The answers are available on the...
Curated OER
Addition Practice #1
Show young mathematicians that they are fully capable of mentally adding two-digit numbers. They start by solving 12 two-addend problems (all with two-digit numbers and aligned horizontally). There is no room to show work. Consider...
Curated OER
Adding in Our Heads
A good presentation on adding two-digit numbers. Learners are shown how to partition the numbers before trying to add them in their heads. A frog is the featured teacher of the PowerPoint, and he leads viewers through many problems and...
Curated OER
More and Less
Mental mathematicians add and subtract 1, 10, and 100 from sets of numbers. Each set of one, two and three-digit numbers gives scholars a chance to practice their addition and subtraction skills. There are 62 whole numbers in all. What...
Curated OER
Practice the 7s
Get those mental mathletes thinking on their toes! Can they recall multiples of seven in these timed exercises? Scholars who have already learned multiples of seven get some timed practice as they finish this 60-problem set. They...
Curated OER
Playing a Math Game Can Enhance the Learning Experience
This fun and educational game will help your students develop their mathematics skills.
DK Publishing
Real-Life Word Problems
Prepare your second graders for word problems with a straightforward review worksheet. Use it after a unit on addition and subtraction up to 100, or after you have worked on money math. A sample word problem prompts young learners to...
Curated OER
Speed Trials #5
How fast can your learners solve these 60 multiplication problems? With numbers from 0 to 10, this resource helps your third graders race through three columns of short multiplication drills. Who can finish first? Use this list of...
Curated OER
Factor Pairs
This presentation covers a lot of ground. Square numbers, metal math computations, commutative property, ordering positive and negative integers, factoring, and real world problem solving are all covered. Use over the course of several...
Curated OER
Choose the Operation: Plus or minus (up to 100)
Investigate the relationship between addition and subtraction as scholars fill in these number sentences, each of which is missing a symbol. Is it a subtraction or addition equation? There are 20 of these to start, all written...
Curated OER
Speed Trials #6
Put your math whizzes to the test with a speed trial worksheet! Third graders zip through 60 multiplication problems, all including digits from 0 to 10. Who can finish first? Use the whole worksheet or cut each column of 20 problems into...
Curated OER
Problem Solving
Give kids a few strategies to help them become amazing problem solvers. This presentation is intended to be used over a two-day period and presents several techniques or ways to solve word problems or multiplication problems by...
Curated OER
All the 3s
By understanding multiplication facts as sets, scholars can conceptualize this math process easier. The facts they need for these problems are listed at the top, and all involve three as a factor. Review these facts with learners before...
Curated OER
All the 4s
Understanding multiplication facts as sets helps scholars conceptualize this math process easier. The facts they need for these problems are listed at the top, and all involve four as a factor. Review these facts with learners before...
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