Adding Two-Digit Numbers Using Place Value

This video tutorial teaches how to add up to four two-digit numbers using place value. It begins with an introduction to the costs of owning pets and then reviews place value concepts. The lesson demonstrates adding numbers by grouping tens and ones, using examples of calculating costs for dog, fish, and hamster supplies. The tutorial emphasizes that numbers can be added in any order to achieve the same sum.

What is the main objective of this lesson?

• To learn how to multiply two-digit numbers

• To learn how to subtract two-digit numbers

• To learn how to add up to four two-digit numbers using place value

• To understand the cost of owning a pet

In the number 267, what does the digit 6 represent?

• Six thousand

• Sixty

• Six hundreds

• Six ones

Which of the following is a correct representation of the number 32?

• None of the above

• Two tens and twelve ones

• Three tens and two ones

• Both A and B

What is a common misunderstanding students have when adding numbers?

• Thinking that numbers must be added in order

• Believing that subtraction is the same as addition

• Thinking that multiplication is needed

• Believing that numbers cannot be added

How much will the dog supplies cost in total?

• $51

• $144

• $154

• $120

What is the first step in adding the cost of fish supplies?

• Multiplying the numbers

• Adding the tens

• Subtracting the tens

• Adding the ones

What is the total cost of the fish supplies?

• $154

• $120

• $144

• $51

What is the cost of the hamster cage?

• $11

• $7

• $8

• $25

How do you add the tens when calculating the cost of hamster supplies?

• Add thirty plus twenty

• Add fifty plus ten

• Add twenty plus ten

• Add sixty plus twenty

What is the total cost of the hamster supplies?

• $154

• $144

• $120

• $51