2nd grade / Addition / Word problems / Total cost of 2 items
When you buy things you need to know how much it will cost you so that you know if you have enough money to pay for them. So we use addition to calculate the TOTAL cost by adding up each item cost. Adding money is similar to adding any other numbers in math except that if the 2 numbers together add up to more than one dollar then we need to deal with both dollars and cents.
Sometimes we are just adding cents: Say we have 2 things that cost 12 cents each. To know the total cost, we simply add the 12 cents twice to get 24 cents. If the 2 items cost different amounts, we can still add up those 2 amounts to get a total cost. For example,
37¢ + 24¢ = 61¢.
When the total goes over one dollar, we need to get an answer in both dollars and cents. So if we add 75 cents and 75 cents, we have a total of 150 cents but we know that 100 cents is 1 dollar, so we have 1 dollar and a remainder of 50 cents. So the sum with answer is
75¢ + 75¢ = $1.50¢.
With our quick math tests you will be revising "Total cost of 2 items" in 2 simple steps. The math in our tests consists of 14 questions that ask you to use addition to find out how much the 2 items cost in total.
3 topics:
Total number of items
Total cost of 2 items
Total cost of 3 items
Sometimes in math the sums are not given to you as numbers in columns, but as words and sentences. This doesn't mean that the math you have to do is different, but it does mean you have to work out first what the sum you are being asked to do is, and then work on the sum itself. In this set of topics, the questions are to do with adding up either the total number of items or the total cost of a set number of items.
When we want to understand math problems in sentences, we need to read carefully through the sentence and create a sum that takes the number information out of the sentence and puts it in a sum. For instance, in the sentence "Jack has 6 apples and Jill has 12 apples." we can see that the things we are interested in are the apples, and the numbers we need to sum are 6 and 12. So, to get the total number of APPLES, we add up the 6 (that Jack has) and the 12 (the number of apples that Jill has). Written as a sum this will be
6 + 12 = 18
So we can say that the number of apples that Jack and Jill have is 18.
When the sentences we are looking at involve money, we have a similar situation, but our addition sum will involve adding amounts of money rather than numbers of items. Sometimes this is easy. Say we have 2 things that cost 12 cents each. To know the total cost, we simply add the 12 twice to get 24 cents. If the 2 items cost different amounts, we can still add up those 2 amounts to get a total cost. For 3 items, the idea is the same.
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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