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# Unit Overview: Numbers within 100

## Lessons:

15 lessons

### Exploring 2-digit numbers by grouping in tens

In this lesson, we will group 2-digit numbers in tens and ones and using strategies to solve problems.

• 1 Quiz
• 23m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Identifying tens and ones in a 2-digit number

In this lesson, we will use resources to show how many tens and ones there are in a 2-digit number.

• 2 Quizzes
• 24m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Partitioning 2-digit numbers (Part 1)

In this lesson, we will use resources to partition 2-digit numbers into tens and ones and representing this in a part-whole model.

• 2 Quizzes
• 21m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Partitioning 2-digit numbers (Part 2)

In this lesson, we will use resources to partition a 2-digit number into tens and ones in a variety of ways.

• 2 Quizzes
• 15m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Exploring the components of numbers within 100

In this lesson, we will represent the number 100 so that we can understand that the number 100 is equal to ten groups of ten.

• 2 Quizzes
• 14m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Representing 2-digit numbers (Part 1)

In this lesson, we will represent how many tens and ones there are in numbers within 100 in different ways and then representing these numbers on a number line.

• 2 Quizzes
• 19m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Representing 2-digit numbers (Part 2)

In this lesson, we will explore different written representations of numbers up to 100 and making connections between the written numerals and written word representations.

• 2 Quizzes
• 14m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Comparing numbers within 100 on a number line

In this lesson, we will find missing numbers in a sequence and estimating where we think a number would go on an unmarked blank number line.

• 2 Quizzes
• 26m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Comparing 2-digit numbers

In this lesson, we will represent 2-digit numbers, comparing the tens and ones in 2-digit numbers and identifying which number is greater or less.

• 2 Quizzes
• 20m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Ordering numbers within 100

In this lesson, we will compare 2-digit numbers, identifying which is greater or less and putting numbers in increasing and decreasing order.

• 2 Quizzes
• 19m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Practising finding one more and one fewer and ten more and ten fewer

In this lesson, we will use representations to help us find one more and one fewer and ten more and ten fewer for numbers within 100 and spot patterns in what changes when we add or subtract 1 or 10.

• 2 Quizzes
• 23m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Identifying number patterns

In this lesson, we will count in threes, forwards and backwards and identify patterns when skip counting in threes.

• 2 Quizzes
• 21m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Exploring odd and even numbers (Part 1)

In this lesson, we will apply our knowledge of place value when solving a problem involving odd and even numbers.

• 2 Quizzes
• 14m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Exploring odd and even numbers (Part 2)

In this lesson, we will use digit cards to make odd and even numbers and solve problems.

• 2 Quizzes
• 16m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Revisiting numbers within 100

In this lesson, we will revisit parts of the unit: Numbers within 100 to explore partitioning 2-digit numbers and comparing and ordering numbers to 100.

• 2 Quizzes
• 18m Video
• Presentation(PPT)
• Worksheet
• Transcript