Sequences Table Challenge

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\(u_1\)	\(u_2\)	\(u_3\)	\(u_4\)	\(d\)	\(u_n\)	\(u_{11}\)	\(u_{61}\)
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Instructions Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

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Help Video For The Basic Sequences Exercise

Sequences Table Challenge was designed for those who have already completed the basic Sequences exercise (all levels). Here is the video that was made for that exercise.

Here is a reminder of some facts that may help you answering the questions in this exercise.

An arithmetic sequence, sometimes called an arithmetic progression, is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 8, 11, 14, 17, 20, 23, . . . is an arithmetic sequence with common difference of 3.

The first term of the sequence can be written as u₁

The n^th term of the sequence can be written as u_n

The common difference is usually written as d

The formula for finding the n^th term is u_n=u₁+(n-1)d

The formula for finding the sum of n terms is S_n=½n(2u₁+(n-1)d)

You can type in answers that are not whole numbers as decimals or mixed numbers (improper fractions not allowed). To type in a mixed number such as 4½ type in 4 space 1 / 2.

In the formula for the nth term don't mix decimals and fractions. For example \( \frac{1}{2}n+\frac{2}{5} \) and \(0.5n + 0.4 \) are both acceptable but \( \frac{1}{2}n+0.4 \) won't be recognised as correct by the program that checks answers.

Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.

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Typing Mathematical Notation

These exercises use MathQuill, a web formula editor designed to make typing Maths easy and beautiful. Watch the animation below to see how common mathematical notation can be created using your keyboard.

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Sequences Table Challenge

Complete the tables showing the terms, formulas and sums of the arithmetic (linear) sequences.

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Description of Levels

Help Video For The Basic Sequences Exercise

Typing Mathematical Notation