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CHOOSE OR LOSE
PLAY
You start the game with 50 points. Each question has 2 to 4 answers. Select the correct answer before your time runs out to score points. Right answers are +10, wrong answers are -2, out of time is -5.

This is a timed game. Your final score is equal to the total score minus time taken.
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Game: CHOOSE OR LOSE

Aim: Choose the right answer; beat the clock

Method:
You start the game with 50 points. Each question has 2 to 4 answers. Select the correct answer before your time runs out to score points. Right answers are +10, wrong answers are -2, out of time is -5.

This is a timed game. Your final score is equal to the total score minus time taken.

LCM using product notation
      
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CHOOSE OR LOSE game to practice
'LCM using product notation' for 7th grade

Show the lowest common multiple of 2 numbers using product notation

To find the lowest common multiple (LCM) of two numbers, you need to find the smallest multiple that both numbers have in common. One way to do this is to use prime factorization and product notation. Here are the steps:

  1. Write each number as a product of prime factors.
  2. Then write the prime factors of each number, multiplying each factor by the highest power it appears in either number.

For example:
The prime factorization of one number is 2² x 3 x 5.
The prime factorization of the other number is 2 x 3² x 7.
The product notation is 2² x 3² x 5 x 7.

If required, you can simplify the product notation by multiplying the bases and their respective exponents. For example, 2² x 3² x 5 x 7 = 4 x 9 x 5 x 7 = 1260.

Here's an example of how to find the LCM of 12 and 15 using product notation:

Write each number as a product of prime factors.

  • The prime factorization of 12 is 2² x 3
  • The prime factorization of 15 is 3 x 5

Write the prime factors of each number in product notation, multiplying each factor by the highest power it appears in either number: 2² x 3 x 5. Note that the factor 5 appears in only one of the numbers but we still include it in the product notation.

To get the LCM as a number you can simplify the product notation by multiplying the bases and their respective exponents.

Therefore, the LCM of 12 and 15 is 2² x 3 x 5 in product notation, which is 60.


In this topic you are asked to use prime factorization to derive the lowest common multiple of 2 numbers and present your answer using product notation.

With our Choose or lose math game you will be practicing the topic "LCM 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 lowest common multiple (LCM) of 2 numbers using product notation.

Select the correct answers to the secondary math problems before the clock counts you out

Large thumbnail for math game Choose or lose

Our CHOOSE OR LOSE game is a simple activity to help secondary math learners and will improve the speed at which you can solve problems in the given topic. It does not rely on the learner typing in the answer. Rather, the learner must choose the correct answer from a list of 2, 3 or 4 similar answers.

CHOOSE OR LOSE encourages faster problem-solving for common and vital secondary math topics. CHOOSE OR LOSE is a timed game with a leaderboard for each topic at each of the 4 levels on offer. You can play the game with or without audio and robots.

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How to play Choose or lose to practice
'LCM using product notation' for 7th grade

Free Math Games screenshot of Chose or lose game for secondary

Our CHOOSE OR LOSE game asks the learner to click on the correct answer from a selection of possible answers before the clock runs down.

  1. Click on PLAY to start.
  2. You are presented with a topic question, then a list or grid of 2 to 4 possible answers (depending on the topic you have chosen).
  3. You must select the correct answer by clicking on it before the clock counts down.
  4. You have 10 seconds in total to answer each question.
  5. The clock starts ticking down 5 seconds after the answers have appeared.
  6. To hear the question again, click / tap on the question box.
  7. The browser will speak the potential answers on rolling-over them.
  8. A correct answer gains you 10 points.
  9. A wrong answer loses you 2 points.
  10. A time-out loses you 5 points.
  11. A score is kept of correct answers against number of answers.
  12. The game is timed, and your final score (points earned minus time taken) is given at the end of the game. Top 10 scores for a topic get you a place on the leaderboard.
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