9514 1404 393
Answer:
3.1 cm
Step-by-step explanation:
The difference in lengths is ...
13 5/10 - 10 4/10 = 3 1/10 . . . centimeters
Jenny's pencil is 3.1 cm longer than Jill's.
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Comment on the subtraction
Above, we have converted both numbers to mixed numbers with a common denominator. You can just as easily convert both numbers to decimal values.
10 2/5 = 10 4/10 = 10.4
Then 13.5 -10.4 = 3.1, as above.
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The wording "how much longer is A than B?" means, "what is the difference A - B?" That difference is found by subtraction. Many graphing calculators will let you enter mixed numbers as part of an expression, so your calculator may be able to find this value for you.
