Curated OER
Numeracy Starters
If you like to start each day with a new math challenge or warm-up, this resource is a must have. It includes 36 slides, each containing a different math challenge that stimulates algebraic reasoning, problem solving, and basic math...
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
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
Horizontal Addition
Here are four examples of double-digit horizontal addition. Learners are shown how to compute numbers horizontally, by first adding the tens and then the ones columns and then adding them both together. This is a great way to boost...
Curated OER
Doubles and Halves 3
Build mental math skills by teaching learners to double and half three-digit numbers. They start out by doubling one of seven double-digit numbers. Next, they discuss their strategy, and then practice doubling and halving 3-digit...
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...
Scholastic
Week 19 Questions
Present your young mathematicians with a new challenge each day. Fractions on Monday, Tuesday is 2's Day, Wednesday is for squares, Thursday is 99 cents day, and by Friday it's time to deal with time. In addition, just for fun, there's a...
Curated OER
Unit 11 Year 5
Apparently unit 11 covers a range of topics related to problem solving, addition, and subtraction. This complete unit presentation is intended for use over a series of days or weeks. It contains numerous visual aids to accompany lessons...
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
Adding Two Numbers
Keep addition drills interesting by varying the exercises. There are four separate sections here for youngsters to solidify their understanding of adding three-digit addends. First, they calculate eight vertically aligned equations,...
Curated OER
Identify Patterns
To complete these number patterns mathematicians must determine by what number each is constantly increasing. However, this isn't your typical skip counting; scholars count by numbers like 18, 60, and even 101 to fill in the missing...
Curated OER
Speed Trials #3
Could your third graders use some practice with their multiplication tables? Use 60 basic multiplication problems to reinforce mental math and times tables. You could give all 60 problems to your class at once, or you could cut up the...
Curated OER
Comparing Fractions
Young mathematicians compare two fractions with like denominators and then move to the next level to compare fractions with unlike denominators. They will first try to use mental math to make educated guesses. There are a few guidelines...
Curated OER
Altitude of A Rocket
The first two slides set up the conditions for this "experiment on paper". A fun activity where students chose which of the rockets will fly higher in the situations given. Each slide is followed by an answer page and this presentation...
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
Comparing a Number and a Product
Mental math strategies are important for fifth graders to be able to determine the greater sum without actually solving the equations. As a summative assessment, this eight-problem worksheet can give insight into the understanding of the...
Illustrative Mathematics
Coupon Versus Discount
All too often stores give coupons for an item, but when you go into buy it, the item is on discount. The store won’t take the coupon if the discount is used. So what do you do, use the coupon or take the discount? This activity helps...
PEGAMES.org
Duck Duels
If you're stuck inside on a rainy day for PE, or just want to give your class a body break, try out this fun game involving quick mental math and movement. Waddling around the classroom as ducks, learners compete in math duels, trying to...
Illustrative Mathematics
Finding a 10% increase
A quick problem to test your mathematicians' knowledge on percent increase. Two different solutions are provided, mental math and computing. Ask your learners to include a description of what they did to supplement their answer.
Virginia Department of Education
Properties
Examine some properties that don't require a general contractor. Scholars first complete a mental math activity that uses the properties of real numbers. A separate activity formalizes these properties.
Curated OER
Dominos As Fractions
Students investigate the concept of using fractions in a variety of different contexts. They participate in a hands on activity in the stead of book work. The goal is to get them acquainted with the use of fractions using mental math...
Curated OER
Equations
In this equations learning exercise, 4th graders solve 4 equations by testing the values for x = 3, 4, 6, and 9. Students solve 8 equations mentally or by testing values for n.
Curated OER
Fundraiser
In this money problems instructional activity, students solve 4 story problems that pertain to buying merchandise and making change in a booth at a school fair.
Curated OER
Counting the Ways
For 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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