MULTIPLE
CHOICE
5th grade / Multiply + Divide / Factors / Find the factors of numbers to 99
The factors of a number are the numbers that can be multiplied together to get that number. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12 because these numbers can be multiplied together to equal 12.
The factors of 6 are 1, 2, 3 and 6
The factors of 16 are 1, 2, 4, 8 and 16
The factors of 66 are 1, 2, 3, 6, 11, 22, 33 and 66
There is no single procedure for finding factors. All numbers have themselves and 1 as factors, but other factors you will need to work out for each number individually.
Knowing multiplication tables up to 10 can help in finding factors of larger numbers. For example, if you knows that 6 x 6 = 36, you can easily find that 1, 2, 3, 4, 6, 9, 12, 18, and 36 are factors of 36.
Some other numbers and their factors are:
The factors of 9 are 1, 3 and 9
The factors of 20 are 1, 2, 5, 10 and 20
The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24 and 48
The factors of 21 are 1, 3, 7 and 21
With our quick math tests you will be revising "Find the factors of numbers to 99" in 2 simple steps. The math in our tests consists of 23 questions that ask you to use times tables or otherwise to identify all the factors of numbers up to 99.
These math tests are designed to round off your learning experience here at Free Math Games by testing whether you can correctly recognize the math you have learned (in the multiple choice test) and that you can correctly enter the correct answers (in the writing test).
Make sure you have chosen the correct topic before starting! Although these tests are timed, try to relax and concentrate on getting the answers right at first - later you can try the tests again more quickly.
The two types of tests are:
Key features of our math tests include:
You should expect to score 8+ / 10 in each test before you select a new topic. It is a good idea to repeat the test for each topic you do after two weeks to "reinforce" the math for that topic
UXO * Duck shoot * The frog flies * Pong * Cat and mouse * The beetle and the bee
Rock fall * Four in a row * Sow grow * Choose or lose * Mix and match
This is a multiple choice activity similar to "What is it" in the Math lessons - you are shown a randomly selected question from the topic you are using. A selection of topic answers are displayed as a list. If you click/tap the speaker beside any answer you will hear the audio for that answer.
For each question, you must click on the answer that matches that question. If your answer is correct you will hear a bell and one star will be lit. The next question will be shown. If your answer is wrong, a box will open showing you what the correct answer was.
The test is timed, and the clock starts when you click the Start button. The clock stops when you click your final answer. At the end of your test a screen will tell you how many of the questions you got right and how long you took to complete the test.
The writing test checks whether you can type the correct answer using your keyboard. This test is also timed. You can do the test many times until you get a good score. To start the test, click on the "Writing test" sign in the navigation board, then click on the "Start the test" arrow.
A random problem from your selected topic is shown. Beneath the problem there is a white box into which you should type the answer. If you need a little help you can click on the "Help me" button for a tip. Only use the help if you really need to.
If you type the answer correctly your device will automatically light a star. If you have entered your answer and no star lights up, click on the tick or press Enter to check your answer. When you have tried all the questions, a screen will show you how many questions you answered correctly and how long it took.
* Try to score 8 out of 10 in both test before you choose a new topic *
* It is OK to do the tests many times if you need to *
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