You got:
| 14.33 | + | (1 x 10) | = | 21.23 |
| time | + | (wrong x 10) | = | score |
3 scores max per player; No foul language, show respect for other players, etc.
Name | Score | Date | ||
|---|---|---|---|---|
| 1 | ||||
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| 10 |
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.
anonymousChil 🌃
"Add unit fractions of like terms"
ROCK FALL game to practice
'Check subtractions using inverse operations' for 5th grade
5th grade / Add + Subtract / Checking answers / Check subtractions using inverse operations
How to use inverse operations to check subtractions
In this topic you are asked to select the correct inverse operation to use to check the given subtraction sum.
Inverse operations are pairs of operations that "undo" each other. For example, addition and subtraction are inverse operations, as are multiplication and division. To use inverse operations to check subtractions, you can perform the opposite operation to the subtraction, which should result in the original number you started with.
Let's say you have answered the subtraction problem: 25 - 7 and decided the answer is 18.
To check this problem using inverse operations, you can perform the opposite operation to subtraction, which is addition. So, you can add 7 to the answer 18 to get back to the original number:
25 - 7 = 18
18 + 7 = 25
If the answer you get from adding the two numbers is the same as the number you started with (in this case, 25), then you know that your original subtraction problem was correct.
A more complex subtraction might be 72 - 45
To check this problem using inverse operations, you can perform the inverse operation, addition. So, you can add 45 to your answer to get back to the original number:
72 - 45 = 27
27 + 45 = 72
Notes on the topic: Check subtractions using inverse operations
In each question you are given a subtraction equation. You are asked to choose the inverse equation that will confirm the subtraction is correct.
With our Rock fall math game you will be practicing the topic "Check subtractions using inverse operations" from 5th grade / Add + Subtract / Checking answers. The math in this game consists of 16 questions that ask you to choose the inverse operations that check these subtractions.
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.
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
Latest leaderboard entries: Rock fall
How to play ROCK FALL to practice
'Check subtractions using inverse operations' for 5th grade
There are rocks falling from an unstable cliff. You need to break the rocks by clicking / tapping on them...
- Press "PLAY" on the settings page to open the game page.
- There is a short countdown before the game starts.
- Rocks start falling from the cliff.
- 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.
- Enter or click/tap the correct math answer to close the question box.
- Rocks fall faster as the game progresses.
- Clear all the rocks to finish the game.
- It is a good idea to hit the small rock first as it gets much harder if you leave it until later.
- This is a timed game and your score is calculated by adding 10 seconds for each wrong answer to your game time.
- If you get one of the 10 best times for the topic you can add your name to the leaderboard for your chosen topic.
