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Thread: Lap quilt from 2" squares - Problem solved thanks everyone.

  1. #1
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    Okay, so I'm sure this has been asked a million times, and I should continue looking/searching old posts, but I've searched calculating, 2" blocks and lap quilt math and looked at least 15-20 posts per search and found nothing.

    So, can anyone tell me how to calculate the number of 2" squares I would need for a lap quilt? Let's say 40X60, just to put a number on it.

    I used to be really good at algebra, but I haven't taken a math class in more than 10 years and it's definitely a use it or loose it subject.

    Thanks in advance.

    C

  2. #2
    Super Member grann of 6's Avatar
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    Quote Originally Posted by mcb1180
    Okay, so I'm sure this has been asked a million times, and I should continue looking/searching old posts, but I've searched calculating, 2" blocks and lap quilt math and looked at least 15-20 posts per search and found nothing.

    So, can anyone tell me how to calculate the number of 2" squares I would need for a lap quilt? Let's say 40X60, just to put a number on it.

    I used to be really good at algebra, but I haven't taken a math class in more than 10 years and it's definitely a use it or loose it subject.

    Thanks in advance.

    C
    It's easy enough to me. If you want 2" finished, then divide 40" by 2. Seems to me you would need 20 across and 30 down. Then add 1/2" to each one for seams.

  3. #3
    Power Poster cjomomma's Avatar
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    I'm figuring 600 sq's. That would be 20 across and 30 down.

  4. #4
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    It's entirely too early, and I am clearly not awake yet. As soon as I made my last post the answer came to me. At least I think it did. Tell me is my math on point?

    width
    2x - 1/2x = 42
    1.5x = 40
    x=28

    length
    2x -1/2x = 60
    1.5x = 60
    x=40

    28x40=1120

    So I'd need 1120 2 inch squares (1.5 inch finished) for a lap quilt that was 42x60?

  5. #5
    KR
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    Quote Originally Posted by mcb1180
    Okay, so I'm sure this has been asked a million times, and I should continue looking/searching old posts, but I've searched calculating, 2" blocks and lap quilt math and looked at least 15-20 posts per search and found nothing.

    So, can anyone tell me how to calculate the number of 2" squares I would need for a lap quilt? Let's say 40X60, just to put a number on it.

    I used to be really good at algebra, but I haven't taken a math class in more than 10 years and it's definitely a use it or loose it subject.

    Thanks in advance.

    C

    Not to worry....it's easy and doesn't even involve algebra.....
    40" divided by 2" = 20 squares
    60" divided by 2" = 30 squares

    20 squares across multiplied by 30 squares down = 600 squares

    If you want your squares to be 2" finished, then you'll want to cut 2 1/2" squares. Unless you want them all to be totally random, you might want to consider strip piecing vs cutting all those little squares....just a thought! Good luck!

  6. #6
    Senior Member DawnMarie's Avatar
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    1080 if your cut size is 2" (finished size 1 1/2" ).
    600 if your finished size is 2" (cut size 2 1/2" ).

  7. #7
    sewTinker's Avatar
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    let's see... if you're wanting the squares to be 2" Finished size...

    40"/2" = 20 squares across (cut at 2.5 inches)
    60"/2" = 30 squares down
    20x30 = 600 squares, cut at 2.5 inches.

    If you add a narrow border, your quilt should finish at a nice size.

    I hope my math is correct... Perhaps I should be waiting until I've had more Coffee!!! lol...

  8. #8
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    I have a chart that indicates you will be able to get 357 2" squares from a yard, 99 from a fat quarter. Now I do not know if that is finished or not.
    JulieM

  9. #9
    KR
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    Quote Originally Posted by mcb1180
    So I'd need 1120 2 inch squares (1.5 inch finished) for a lap quilt that was 42x60?
    You got it!

  10. #10
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    Quote Originally Posted by KR
    Quote Originally Posted by mcb1180
    So I'd need 1120 2 inch squares (1.5 inch finished) for a lap quilt that was 42x60?
    You got it!
    Thanks KR...

    Now to figure out how many squares I already have and how many more I need, but that I'll have to tackle after work.

    Thanks a bunch everyone.

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