Possible: 50
Find the sum of each set of numbers, as well as the size n of each set of numbers (i.e., the number of numbers in the set).
Use these exercises to practice techniques for adding numbers quickly. Try to do the problems without a calculator.
Think about ways in which grouping the numbers might make them easier to add.
5)
5)
a. 25, 35, 19, 31
Sum:
5)
on
b. 101, 73, 49, 27, 24, 36,
Sum:
c. 25, 25, 25, 30, 30, 30, 32, 32, 32
Sum:
Points possible: 30
This is attempt 1 of 2.
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