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Elementary math lessons to learn
'Total cost of 2 items' for 2nd grade
2nd grade / Addition / Word problems / Total cost of 2 items
Total cost of 2 items
Learn how to add money costs with this topic
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 these interactive math lessons you will be learning "Total cost of 2 items" from
2nd grade / Addition in 3 easy steps. The math in our lessons consists of 5 questions that ask you to use addition to find out how much the 2 items cost in total.
Word problems: adding items and item costs
Learn how to add items and how to add the cost of multiple items with the sub-category "Word problems"
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.
There are 3 easy math lesson activities in this "Total cost of 2 items" 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
'Total cost of 2 items' for 2nd 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.
