Adding Two-Digit Numbers with Base Ten Blocks

This video tutorial teaches how to add two-digit numbers using base ten blocks. It covers the basics of base ten blocks, demonstrates adding numbers like 27 and 31, and 64 and 23 using these blocks. The video also shows how to use drawings to represent base ten blocks for addition, making it accessible even without physical blocks.

What is the value of a 'long' in base ten blocks?

• 1

• 10

• 100

• 1000

How many 'longs' are needed to represent the number 27?

• 1

• 4

• 2

• 3

How many 'cubes' are needed to represent the number 27?

• 5

• 7

• 8

• 6

What is the sum of 27 and 31 when using base ten blocks?

• 48

• 58

• 49

• 57

How many 'longs' are needed to represent the number 64?

• 7

• 6

• 5

• 4

How many 'cubes' are needed to represent the number 23?

• 3

• 1

• 4

• 2

What is the sum of 64 and 23 when using base ten blocks?

• 97

• 87

• 107

• 77

How many 'longs' would you draw to represent the number 15?

• 2

• 1

• 4

• 3

How many 'cubes' would you draw to represent the number 74?

• 2

• 3

• 5

• 4

What is the sum of 15 and 74 when using drawings of base ten blocks?

• 99

• 79

• 80

• 89