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Identify cube numbers
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You will see the left side of an equation. Then you will see and hear two possible answers for the right side of that equation.

Click on the correct answer.
FULL TUTORIAL
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You will see the left side of an equation. Then you will see and hear two possible answers for the right side of that equation.

Click on the correct answer.

There are 10 questions in this test.
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Identify cube numbers
      
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Secondary math lessons to learn
'Identify cube numbers' for 7th grade

Identify cube numbers

What are cube numbers?

A cube number is a number that is produced by multiplying an integer by itself twice. Examples of cube numbers include 8, 27, 64, 125, etc. The smallest cube number is 0 since 0 x 0 x 0 = 0 and zero is an integer. The number 1 is also a cube number since 1 x 1 x 1 = 1.

4 x 4 x 4 = 4³ = 64


How to identify cube numbers

The easiest way to know if an integer is a cube number is to use the cube root function on your calculator... If the answer is an integer, then the input is a cube number. Cube numbers can be positive or negative since multiplying three negative integers together always gives a negative answer. So on a number line the cube numbers extend to the left and right of zero with identical values apart from the sign:

...   -125   -64   -27   -8   -1   0   1   8   27   64   125   ...


The cube numbers to 225 (15³)

  • 0 = 0 x 0 x 0 = 0³
  • 1 = 1 x 1 x 1 = 1³
  • 8 = 2 x 2 x 2 = 2³
  • 27 = 3 x 3 x 3 = 3³
  • 64 = 4 x 4 x 4 = 4³
  • 125 = 5 x 5 x 5 = 5³
  • 216 = 6 x 6 x 6 = 6³
  • 343 = 7 x 7 x 7 = 7³
  • 512 = 8 x 8 x 8 = 8³
  • 729 = 9 x 9 x 9 = 9³
  • 1000 = 10 x 10 x 10 = 10³
  • 1331 = 11 x 11 x 11 = 11³
  • 1728 = 12 x 12 x 12 = 12³
  • 2197 = 13 x 13 x 13 = 13³
  • 2744 = 14 x 14 x 14 = 14³
  • 3375 = 15 x 15 x 15 = 15³

Types of question in this topic

This topic asks 4 different types of question.

  1. Select the (only) cube number from a grid of numbers
  2. Select the largest cube number from a grid of numbers
  3. Count how many cube numbers there are in a grid of numbers
  4. What is the cube root of the given cube number?

With these interactive math lessons you will be learning "Identify cube numbers" from
7th grade / Number / Powers & Roots in 3 easy steps. The math in our lessons consists of 7 questions that ask you to identify the cube numbers in each group of integers.

Show lesson introduction
1 / 7
The only cube number in this grid is 8
25
8
36
67
6
9
8
2 / 7
The only cube number in this grid is 64
64
68
62
54
44
72
64
3 / 7
The only cube number in this grid is 1
9
6
3
1
1
4 / 7
The largest cube number in the grid is 125
400
164
125
58
125
5 / 7
The largest cube number in the grid is 216
216
218
64
212
216
6 / 7
The number of cube numbers in this grid is 0
3
6
9
12
15
18
0
7 / 7
The number of cube numbers in this grid is 2
24
27
64
67
72
82
2

There are 3 easy math lesson activities in this "Identify cube numbers" tutorial. These activities progress step by step to help you the learner gradually master this math topic. The activities are based on "3 stage questioning", a method of learning that quickly and easily builds your confidence as you work through the short series of lessons that strengthen your knowledge of the math that you want to learn.

When you have completed the tutorial for a topic, you should try some of our games before finally doing the test for your chosen topic. See the Help box below for detailed instructions on how to use the lesson activities to help you learn your math more easily.

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How to use our tutorials to learn
'Identify cube numbers' for 7th grade

Introduction to the math topic

You start the tutorial with a lesson that introduces the math you will be learning. You will see a set of questions one at a time, and for each question you will see the written answer and also hear the answer to that question.

Repeat the question/answer by clicking on the brown speaker sign. Repeat the question/answer and expand the question graphic by clicking on the question box. Move between questions using the arrow buttons below the question. If there is additional information available for your chosen topic, the "i" button on the left upright bar will be brown on white. Click on the button to load the additional lesson information into the main interface.


Either / Or math lesson

This lesson moves on from the "Introduction" lesson and offers you two possible answers to each question. So, you will see a question then a voice will ask "Is this ... or is it ..." and you will have to choose which of the answers is the one that matches the question.

You choose an answer by clicking or tapping on one of the two answer boxes below the question. You can play the audio for each answer again by clicking on the speaker icon beside the written answer (if robot speech is available and enabled). The program will let you know each time whether you answered correctly. A star will light up red for a wrong answer or white/black for a correct answer.

This lesson asks you the questions in a random order compared to the introduction. At the end of the lesson, you can choose whether to repeat the lesson or move on to the next one.


What is it? math lesson

The final lesson of the tutorial shows you multiple possible answers for each question - you must choose the correct one. You are asked a question and below it are a list of two, three, or four possible written/numeric answers from this topic. Pressing the speaker icon will play the math audio for that answer.

For each picture, click on the answer that matches the question. The program will tell you whether you are right or not. As with the Either / Or activity a system of stars indicate your right and wrong answers. The What is it? lesson will show you all the questions you learned in the Introduction but in a random order.


When you complete the "What is it?" lesson, you can choose whether to go on to play some games with this topic, or whether you want to repeat some or all of the lesson activities in this tutorial. You should expect to get 80% of the answers correct in most of the activities before trying some of the Math games with this topic.

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