\(\mathbb N\): The set of natural or counting numbers 0, 1, 2, 3, etc. Some say this set does not include zero.

\(\mathbb Z\): The set of integers. This set is the same as the set of natural numbers but includes the negative whole numbers.

\(\mathbb Q\): The set of rational numbers. These are the numbers that can be expressed as a proper fraction or one integer divided by another.

\(\mathbb R\): The set of real numbers. That is probably all the numbers you know unless you have studied the topic of Complex Numbers.

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$$\mathbb R$$

$$\mathbb Q$$

$$\mathbb Z$$

$$\mathbb N$$

\(\text{one million}\)

\(\frac34\)

\(\cos 40^o\)

\(\pi\)

\(\sin 30^o\)

\(-\sqrt9\)

\(\frac{57}{9}\)

\(\frac23\)

\(\sqrt2\)

\(1.\dot4\dot2\)

\(\frac12\div\frac12\)

\(7\)

\(-2.479315...\)

\(1.3\)

\(1\div6\)

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#### Equatero

Find the mathematical expression from a series of guesses and clues. This is the numerical version of the extremely popular internet sensation Wordle and UK TV quiz show called Lingo.

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Drag the numbers into the correct sets as shown in the Venn diagram above. When you have finished click on the 'Check' button above.

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There are other related activities on the Transum Mathematics website to support your understanding of number.

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#### Plotting Graphs

Complete a table of values then plot the corresponding points to create a graph. So far this activity has been accessed 29268 times and 794 Transum Trophies have been awarded for completing it.

Strange But True,

Monday, August 5, 2019

"Most natural numbers are very, very large!"