Adding and subtracting ones from a 2-digit number

In this lesson, we will use our knowledge of number bonds within ten to begin deriving facts when adding or subtracting ones from numbers within 100.

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.My whole is 6. One of my parts is 3. What is the other part?

1/4

Q2.My whole is 5. One of my parts is 2, What is the other part?

2/4

Q3.What is 17 - 5?

3/4

Q4.Fifteen subtract four is equal to _______.

4/4

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.My whole is 6. One of my parts is 3. What is the other part?

1/4

Q2.My whole is 5. One of my parts is 2, What is the other part?

2/4

Q3.What is 17 - 5?

3/4

Q4.Fifteen subtract four is equal to _______.

4/4

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Adding and subtracting ones from a 2-digit number

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.What known fact can help us work out 68 - 5?

1/4

Q2.What known fact can help us work out 45 - 3?

2/4

Q3.What is 37 - 5?

3/4

Q4.What is 32 + 6?

4/4

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Adding and subtracting ones from a 2-digit number

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.What known fact can help us work out 68 - 5?

1/4

Q2.What known fact can help us work out 45 - 3?

2/4

Q3.What is 37 - 5?

3/4

Q4.What is 32 + 6?

4/4

Lesson summary: Adding and subtracting ones from a 2-digit number

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