How do how you cross cancel multiplying fractions
1 answer:
It's easy once you spot the ones that can cross cancel!
Say we have the fractions 8/10 and 20/23. (it's easier to see on top of each other)
If you look diagonally , so 8 and 23 and 10 and 20, you can see that 10 and 20 have a common factor. So we divide it by the highest common factor to reduce those numbers, making it easier to multiply. 10 and 20 can become 1 and 2, dividing by 10. So now we are left with 8/1 and 2/23, and now we multiply normally going across so 16/23.
This works going both diagonals and simplifying both, but in that case it would be easier to try and simplify the fractions before cross multiplying them.
Basically: look for those diagonals and if they can be divided down by the highest common factor, go for it to make it easier to multiply normally afterwards.
Hope I helped!
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Answer:
∴ Pineapple juice cups , Orange juice
cups and Seltzer juice
cups.
Step-by-step explanation:
Given;
To mix cups of pineapple juice
cups of orange juice in
cups of Seltzer in order to make
servings of plants
Total cup of juice,
cups
To make cups of punch then;
( By fraction rules )
Pineapple juice cups
Orange juice cups and
Seltzer juice cups
So Pineapple juice cups , Orange juice
cups and Seltzer juice
cups.