math

Lesson 12: Operations with Fractions Unit Test CE 2015 Math 7 A Unit 5: Operations with Fractions and Rational Numbers
-I need help ASAP-
517.3 km = _ m.
5,941 mm = 5.941 _
1 7/8 + 1/9
5 2/11 - 3 2/18
7 1/3 * 4 15/17
3/9 + 4/9
-6/7 + 6/21
14 2/9 + 11 2/3
-4/9 + (-1/3)
4/7 - 3/6
-3 5/9 - 1 3/9
6 1/3 - 4 4/9
Walter had 2/4 yard of string. He used 1/2 of the string for a school project. How many yards of string did he use for his project?
2/5 of 20
ect.
I mainly need help with the first couple ones

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  1. I don't wanna give you the answers, but I can show you how to solve these kinds of problems:

    To add fractions, it's easier to make them into improper fractions and then make the denominators the same. Let's take your 3rd problem for example (1 7/8 + 1/9). 1 7/8 becomes 15/8. A common denominator for both 9 and 8 is 72, so 15/8 becomes 135/72 and 1/9 becomes 8/72. Now it's so much easier to add them because all you gotta do is add the numerators. Your final answer would then be 143/72 which would be 1 71/72 as a mixed number. You can use this same method for subtracting fractions. Hope this helps.

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  2. Thanks AJ L

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  3. Anytime!

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  4. 517.3 km = _ m.
    to do unit conversions multiply by somethting that makes the units come out
    like
    (1 meter/1,000 mm) or (1,000 mm/1 meter)
    or
    (1 km/1000 meters) or (1,000 meters/ 1 km)
    so
    517.3 km (1,000 m/km) = 517,300 m

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    👨‍🏫
    Damon
  5. Thanks Damon

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  6. answer

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  7. d0 it you self if you read that uinit you will not
    need help

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  8. Lol

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  9. i'm dating sokka now btw if anyone was wondering

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  10. nobody asked so no I don't think we where wondering XD no offence

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  11. So what are the answers????????

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  12. WHAAAA

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  13. answers ???

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  14. i feel like we should just guess and i put the answers on

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  15. ok i will

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  16. answers 100% honest
    a
    a
    c
    b
    b
    b
    d
    a
    b
    d
    a
    b
    d
    c
    c
    c
    b
    a
    a
    c
    b

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  17. thank u this helped so much i was behind

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  18. i took one for the team i got most of them wrong :(

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  19. I have 6 more quiestions tho

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  20. minecraft is this practice or the test

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  21. i got 27 questions

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  22. If u guys read the webmail u got from math teacher it says that numbers 1,2,23,24,27 we didn’t have to do and would earn full credit

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  23. What are the last 5 questions?????

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  24. please don't listen to Minecraft I got 7/25 :(

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  25. mine is 20 but 2 is portfoilo

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  26. are the answers right or wrong from @minecraft is he right?

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  27. instead of saying the letters can u give us the full answers in written from too?

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