Parent Mathing Tip #10: Measurement
These tips give parents ideas for math exercises that will develop their child's math abilities. Today’s parent tip for “mathing” with your child focuses on measurement.
“Special percents” are easy to compute because they represent easy-to-calculate amounts.
0% means “none of it”
25% means “a quarter of it”
50% means “half of it”
100% means “all of it”
200% means “all of it, twice”
To find 100% of 30 we take “all of it”. All of 30 is 30 and so
100% of 30 is 30.
To find 200% of 30 we take “all of it, twice”. All of 30 is 30, and double of 30 is 60. So,
200% of 30 is 60.
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