Asked by Hope
okay so i feel like a dummie for not knowing this but i need the answer FAST!
Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5?
1) commutative property of addition
2) distributive property
3) additive identity
4) additive inverse
Please help me
Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5?
1) commutative property of addition
2) distributive property
3) additive identity
4) additive inverse
Please help me
Answers
Answered by
Reiny
They clearly want you to mentally group the numbers into
27+3 + 15+5 to quickly in your head find 20+20=40
Now which property lets you do something like
a+b = b+a ?
27+3 + 15+5 to quickly in your head find 20+20=40
Now which property lets you do something like
a+b = b+a ?
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