samtab
Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5?
a,commutative property of addition
b,distributive property
c,additive identity
d,additive inverse
please help me:(
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jim_thompson5910
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Hint:
27 + 15 + 3 + 5
may be easier to do in your head if you swap 15 and 3 to get
27 + 3 + 15 + 5
precal
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commutative propery
commutative property of addition a+b=b+a
commutative property of multiplication ab=ba
precal
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using words
commutative property allows you to add numbers in any order
a+b=b+a or 12+3=3+12
for the second case it allows you to multiply numbers in any order
ab=ba
2*5=5*2
precal
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jim_thompson5910 is correct
samtab
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so it b???
jim_thompson5910
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re-read what precal wrote
samtab
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ow its c
jim_thompson5910
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you sure?
samtab
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no not really:(
jim_thompson5910
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which property did precal mention?
samtab
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comunitive
jim_thompson5910
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that's your answer