math & measuring for quilting measure twice, cut once!!
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What Do You Know? Ruler & Fraction Refresher WorksheetTRANSCRIPT
Math & Measuring for Quilting
Measure twice, cut once!!
Fabric is sold in yards 36” in 1 yard The amount of yards of fabric you
purchase determines the length of fabric you have
Most fabric is always 42-44” wide! (selvage to selvage)
Seam allowances for quilting are ALWAYS ¼”
What Do You Know?
Ruler & Fraction Refresher Worksheet
Adjusting the pattern Standard Measurements
Twin 81” x 106” Full 96” x 106” Queen 102” x 112 King 118” x 112”
Ways to change the size Change the number of blocks Change the size of the blocks Change the number of sashing strips Change the width of the sashing strips Change the number and/or the width of
the borders
What’s the answer… If you find a pattern for a twin, but you want your quilt to be
a full, does the length change? No
Does the width change? Yes
How much does the width change? 15”
If the twin size pattern is made up of 7 blocks across by 10 blocks long, there is no sashing, but there are 2 borders, what could you do to change the size of this pattern to a full? Change the number of blocks, if the blocks are 5”, you
will need to add 3 blocks to the width
Let’s Review Quilt Math Your first row has 10 blocks. Your seam
allowance measures ½ inch instead of ¼ inch. How much will your first row be off?
Your quilt top measures 80 in x 108 in. How many yards of fabric would you need to purchase? How will your backing be pieced together?