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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.

HCF using product notation
      
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ROCK FALL game to practice
'HCF using product notation' for 7th grade

Find the highest common factor (HCF) of pairs of numbers using prime factorization and product notation

The highest common factor (HCF) of two numbers is the largest factor that is common to both numbers. It is also known as the Greatest Common Factor (GCF).

Product notation is a way of representing a number as a product of its prime factors. For example, the prime factorization of 24 can be written as 2³ × 3¹. To find the HCF of two or more numbers using product notation, you need to follow these steps:

  1. Write the prime factorization of each number using product notation.
  2. Identify the common factors of the two numbers
  3. Take the lower power of each factor that appears in both of the factorizations.
  4. Multiply the common factors together to get the HCF.

Example 1: Find the HCF of 18 and 24.

The prime factorization of 18 is:18 = 2¹ x 3²

The prime factorization of 24 is:24 = 2³ x 3¹

To find the HCF of 18 and 24, we take the lowest power of each prime factor that appears in both factorizations:

HCF(18,24) = 2¹ × 3¹ = 6


Example 2: Find the HCF of 16 and 28.

The prime factorization of 16 is:16 = 2⁴

The prime factorization of 28 is:28 = 2² x 7¹

To find the HCF of 16 and 28, we take the lower power of each prime factor that appears in both factorizations:

HCF(16,28) = 2² = 4


In this topic you are asked to find the highest common factor of pairs of numbers presenting your answers in product notation.

With our Rock fall math game you will be practicing the topic "HCF using product notation" from 7th grade / Number / Multiples Factors Primes / Multiples Factors Primes. The math in this game consists of 16 questions that ask you to identify the Highest Common Factor (HCF) using product notation for the given pairs of numbers.

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
'HCF using product notation' for 7th grade

Free Math Games screenshot of Rock fall game for secondary

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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