Question

for 29+31 +42+68 wich property we will use

Answer 1

We Use The Distributive Property Over Addition In This

(29+31)+(42+68)
60+110
170
Answer

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Answer 2

we know 9+1 is 10 and 2+3 is 5 so first 2 numbers will b 60 and 2+8 is 10 and 6+4 is also 10 so sum 2nd 2 numbers is 110 so total is 170.