Addition and Mental Math Concepts

This video tutorial covers a second-grade math lesson on using partial sums for addition. It introduces the strategy, demonstrates solving problems with place value blocks, and provides guided and independent practice. The lesson emphasizes mental math and checking solutions, culminating in problem-solving exercises and an assessment to ensure understanding.

What is the main focus of this math lesson?

• Subtraction with regrouping

• Division of whole numbers

• Multiplication of single digits

• Adding with partial sums

How many pears did Wendy and Tony pick together?

• 63

• 93

• 83

• 73

What is the purpose of using place value blocks in addition?

• To help understand place value in addition

• To visualize multiplication

• To divide numbers

• To subtract numbers

When adding 37 and 46, what is the sum of the tens?

• 80

• 50

• 70

• 60

What is the sum of 38 and 59 using mental math?

• 77

• 97

• 107

• 87

In guided practice, what is the sum of 12 and 23?

• 25

• 35

• 45

• 55

What is the sum of 18 and 24 in the independent practice section?

• 42

• 62

• 32

• 52

How many tennis balls do Jenny and Sal have together after Sal gives some away?

• 20

• 25

• 30

• 35

Which of the following sums is equivalent to 26 plus 16?

• 28 plus 16

• 34 plus 10

• 20 plus 24

• 30 plus 14