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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.

Subtract grams from kilograms
      
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ROCK FALL game to practice
'Subtract grams from kilograms' for 3rd grade

Subtract masses given in grams from masses in kilograms

To subtract weights given in grams from weights given in kilograms, you first need to convert the kilograms to grams. This is because kilograms and grams are different units of mass, and you cannot directly subtract them without first converting them to the same unit. Here's how to do it:

Convert kilograms to grams: As there are 1,000 grams in a kilogram, you need to multiply the number of kilograms by 1,000 to convert it to grams.

For example, let's say you have 4 kilograms and you want to subtract 350 grams from it. To convert the 4 kilograms to grams, you would multiply by 1,000:

4 kilograms x 1,000 = 4,000 grams

Subtract the given weight in grams from the converted weight in grams:

4,000 grams - 350 grams = 3,650 grams

So, the resulting weight after subtracting 350 grams from 4 kilograms is 3,650 grams.


Another example, subtract 900 grams from 1.3 kilograms.

Converting the kilograms to grams we have 1.3 kg x 1,000 = 1300 g.

Subtracting the 900 grams we have 1,300 g - 900 g = 400 g.

So, the final weight after subtracting 900 grams from 1.3 kilograms is 400 grams.


This topic asks you to subtract a given number of grams from a weight given in kilograms. You do so by first converting the kilograms to grams. Your answers should be in grams.

With our Rock fall math game you will be practicing the topic "Subtract grams from kilograms" from 3rd grade / Measurements / Calculate. The math in this game consists of 16 questions that ask you to subtract masses by converting the given kilograms to grams and then subtracting the weights.

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
'Subtract grams from kilograms' for 3rd 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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