Mastering Mental Math Strategies for Addition

This video tutorial by Mr. Math Blog covers mental math strategies for addition, focusing on techniques like counting by tens and ones, using compatible numbers, and employing friendly numbers. The tutorial includes examples and explanations to help students understand and apply these strategies effectively.

What is the main focus of this lesson?

• Multiplication strategies

• Mental math strategies for addition

• Subtraction techniques

• Division methods

What are the numbers called that we add together?

• Factors

• Addends

• Multiples

• Divisors

What is the sum of 57 and 15 using the number line method?

• 70

• 75

• 65

• 72

When adding 57 and 15, what is the first step on the number line?

• Jump to the nearest 20

• Jump to the nearest 10

• Jump to the nearest 50

• Jump to the nearest 5

What is the sum of 43 and 28 using the number line method?

• 72

• 71

• 73

• 70

What is the first step when adding 43 and 28 on the number line?

• Jump to the nearest 5

• Jump to the nearest 10

• Jump to the nearest 20

• Jump to the nearest 50

What are compatible numbers?

• Numbers that are easy to multiply

• Numbers that are easy to compute mentally and close to the real numbers

• Numbers that are easy to subtract

• Numbers that are easy to divide

What is a compatible number close to 178?

• 200

• 170

• 180

• 175

What are friendly numbers?

• Numbers that have zeros in the ones position

• Numbers that are prime

• Numbers that are odd

• Numbers that are even

What is the sum of 38 and 56 using friendly numbers?

• 92

• 94

• 96

• 90