Adding two numbers in standard form

In this lesson, we will learn how to add any two numbers together in standard form. We will look at initial cases where powers are equal, and move to more complicated cases where powers are different.

Unit quizzes are being retired in August 2023

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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.Write 4 x 10⁻³ in ordinary form.

1/3

Q2.Write 2.05 x 10⁻⁶ in ordinary form.

2/3

Q3.Which number is smaller? 5 x 10⁻⁴ or 4 x 10⁻⁵

3/3

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.Write 4 x 10⁻³ in ordinary form.

1/3

Q2.Write 2.05 x 10⁻⁶ in ordinary form.

2/3

Q3.Which number is smaller? 5 x 10⁻⁴ or 4 x 10⁻⁵

3/3

Video

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• Click "Close Video"
• Click "Next" to view the activity

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Unit quizzes are being retired in August 2023

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

Adding Two Numbers in Standard Form

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

Q1.Work out (2.7 × 10⁶) + (7.3 × 10⁶). Give your answer in standard form.

1/5

Q2.Calculate (4 × 10³) + (4 × 10⁴), give your answer in standard form.

2/5

Q3.Work out (3 × 10⁴) + (4 × 10⁵), give your answer in standard form.

3/5

Q4.Calculate (4.1 × 10⁶) + (3.2 × 10⁵), giving your answer in standard form.

4/5

Q5.Work out (5 × 10¹) + (5 × 10⁻¹), giving your answer in standard form.

5/5

Unit quizzes are being retired in August 2023

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

Adding Two Numbers in Standard Form

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

Q1.Work out (2.7 × 10⁶) + (7.3 × 10⁶). Give your answer in standard form.

1/5

Q2.Calculate (4 × 10³) + (4 × 10⁴), give your answer in standard form.

2/5

Q3.Work out (3 × 10⁴) + (4 × 10⁵), give your answer in standard form.

3/5

Q4.Calculate (4.1 × 10⁶) + (3.2 × 10⁵), giving your answer in standard form.

4/5

Q5.Work out (5 × 10¹) + (5 × 10⁻¹), giving your answer in standard form.

5/5

Lesson summary: Adding two numbers in standard form

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