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ROCK FALL
PLAY
Click / tap on each falling rock. Answer the question in the box as quickly as you can.
There are only 4 questions in this game so it is quite short... if you can get those rocks!

Your final score is based on number of questions answered right / wrong, and the time taken.
...

Game: ROCK FALL

Aim: Smash all the falling rocks

Method:
Click / tap on each falling rock. Answer the question in the box as quickly as you can.
There are only 4 questions in this game so it is quite short... if you can get those rocks!

Your final score is based on number of questions answered right / wrong, and the time taken.

Total cost of 2 items
      
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ROCK FALL game to practice
'Total cost of 2 items' for 2nd grade

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,

37Β’ + 24Β’ = 61Β’.

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

75Β’ + 75Β’ = $1.50Β’.

With our Rock fall math game you will be practicing the topic "Total cost of 2 items" from 2nd grade / Addition / Word problems. The math in this game consists of 14 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.

Click / tap on rocks and answer math questions to win the game

Large thumbnail for math game Rock fall

ROCK FALL is based on the road traffic warning sign for falling rocks - a sign that seems a bit less useful than somebody getting up there on that cliff and actually doing something about it... Anyway, the rocks are falling and it is your job to stop them hitting the road below, or at least stopping them hitting the road below too many times and breaking it. Smash the rocks by clicking or tapping on them (not so easy in real life of course) - they will turn into snowflakes and float gently down into nothing.

There are 4 rocks to stop and not much time to do it (if you want to get a good score and get on the leaderboard). This game is fun and fast and requires good reflexes and a good strategy. Plan to break the smaller rocks first if you want a good score because the rocks fall faster as the game progresses. It also helps to decide where on their path you plan to click / tap the rocks.

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How to play ROCK FALL to practice
'Total cost of 2 items' for 2nd grade

Free Math Games screenshot of Rock fall game for elementary

There are rocks falling from an unstable cliff. You need to break the rocks by clicking / tapping on them...

  1. Press "PLAY" on the settings page to open the game page.
  2. There is a short countdown before the game starts.
  3. Rocks start falling from the cliff.
  4. Click or tap on a rock to break it into a snowflake - a question box will open with up to 4 multiple choice answers or an on-screen keyboard.
  5. Enter or click/tap the correct math answer to close the question box.
  6. Rocks fall faster as the game progresses.
  7. Clear all the rocks to finish the game.
  8. It is a good idea to hit the small rock first as it gets much harder if you leave it until later.
  9. This is a timed game and your score is calculated by adding 10 seconds for each wrong answer to your game time.
  10. If you get one of the 10 best times for the topic you can add your name to the leaderboard for your chosen topic.
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