This is the bundle of 3 resources in print task cards versions

• Mental Math Strategies- addition and subtraction
• Mental Math Strategies Multiplication
• Mental Math Strategies Division

1. Mental Math Strategies for Addition and Subtraction with visuals. Compensating, decomposing, balancing, and clustering.

Teaching Mental math Strategies to students even in grades 3 and up is very important as it develops their flexible thinking and boosts their confidence in math. Being able to use the addition and subtraction properties to apply mental math strategies shows a deep conceptual understanding that will, later on, be applied to more advanced concepts.

Mental Math strategies make great math talks. Present a problem and ask students how to solve it. Can we do it mentally? Present a solution and ask them to explain. Discuss the different solutions and find the connections. Introduce strategies through math talks and apply them to more problems. Ask questions like: Which mental math strategy is for this problem? Why? I always include mental math strategies in math talks and I find that it helps the students see beyond the algorithm and look for relations in numbers.

This resource is a collection of activity cards to practice mental math strategies for addition and subtraction with visuals, examples, and practice questions for the strategies:

• Compensation 10s 100s addition, subtraction
• Decomposing to create compatible numbers 10s 100s addition subtraction
• Balancing
• Clustering

The collection includes 30 print task cards.

You can use the slides for Math talks, warm-ups, practice, and more.

2. Mental Math Strategies, Multiplication, Properties, Rounding, Decomposing, Doubling and halving, Multiplying by 9, 11, 5, Factors of 100, Grouping, Multiplying in stages,

Encouraging students to look for patterns and connections in multiplication and finding quicker methods to solve problems will help them develop their mental multiplication skills and improve their number sense. Apart from the algorithm that requires splitting a number according to place value, there are many more strategies that students can apply to solve problems in different ways.

This resource is the print task cards and it includes 30 activity cards with properties, visuals, examples, and problems for the strategies

• Multiplying by 9
• Multiplying by 11
• Multiplying by 5
• Multiplying by 10, 100 1000...
• Multiplying by factors of 100 and 1000
• Decomposing into factors
• Multiplying in stages
• Multiplication by rounding
• Doubling and halving

3. Mental Math Strategies for Division. Simplifying the problems. Partial products. print task cards

This resource is about division strategies that not only help students solve problems quickly but most importantly they help them gain a conceptual understanding of numbers and develop flexible mathematical thinking.

Once your students have understood the concept of division with number lines, pictures, arrays, base ten blocks, and other manipulatives they will be ready to practice some mental math strategies.

Some students discover mental math strategies through practice, naturally, however, most of the students need to be taught the strategies and practice applying them to selected problems. There is a special joy in discovering a strategy, a “trick”. We can guide our students to “discover” a strategy by providing appropriate problems and discussing them. Many of these strategies are used for simplifying fractions and finding equivalent fractions.

The resource includes 52 print task cards with visuals, examples, and problems to practice the strategies and more. It also includes 14 posters-math walls with the division strategies.

• Dividing by 5 by doubling
• Halving the divisor and the dividend
• Dividing the dividend and the divisor by a common factor
• Dividing multiples of 10
• Decomposing the dividend to a product
• Decomposing the divisor to a product
• Dividing in steps
• Dividing by 4
• Dividing by 8
• Rounding compensating estimating
• Decomposing the dividend to a sum-Partial quotient
• Different ways of showing the partial quotients method (box, area model, subtraction, fractions)
• Divisibility rules
• Estimating by rounding the dividend, divisor or both

This resource is Outschool use approved with the one-time purchase of the Outschool extended licence