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The teaching of mathematics in school is graduated so that each task mastered leads to the next set of problems. There was a time in your life when you didn't know what 1 + 1 was. You mastered that. Mastering the GCF helps you to reduce fractions. Mastering the LCM helps you to add and subtract fractions. Let's look down the road. What else is about mastering the manipulation of numbers and fractions and percentages? Money. Every business uses that in some form or another.

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Q: Where in life do you use GCF and LCM?

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To work with fractions. And not all things happen in wholes.

Gcf you use when you are finding the greatest factor for the numbers. Lcm you use when you are finding the smallest multiple in the numbers factors

The GCF is 7.The LCM is 70.

Use the GCF to reduce equivalent fractions. Use the LCM to add and subtract unlike fractions.

Finding the LCM will help you add and subtract fractions. Finding the GCF will help you reduce fractions.

To answer GCF and LCM questions.

you use the lcm (least common multiple).

The LCM is 504 and the GCF is 24

To find the GCF and the LCM you have to first at least try to use prime factorization. So use factor trees. Or for the LCM find th least common multiples of the number.

The GCF is 68, the LCM is 68

Use the GCF to reduce fractions. Use the LCM to add and subtract unlike fractions. Carpenters work with fractions a lot.

GCF is 2.LCM is 42.The GCF is 2.

The GCF is 9. The LCM is 135.

LCM is 120, GCF is 6

The GCF is 6xy. The LCM is 72xy2

The GCF is 91. The LCM is 4095.

The GCF is 4. The LCM is 72.

The GCF is 16. The LCM is 96.

The GCF is 12. The LCM is 360.

The GCF is 7. The LCM is 14.

The GCF is 3. The LCM is 99.

The GCF is 12. The LCM is 144.

The GCF is 15. The LCM is 990.

The GCF is 12. The LCM is 24.

The GCF is 17. The LCM is 255.