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One method is (10×4)+(5×3) = 55 (or mentally add up from left to right).

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10 + 10 + 10 + 10 + 5 + 5 + 5 = 55

Q: What is 10 plus 10 plus 10 plus 10 plus 5 plus 5 plus 5?

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10 + 10 + 10 + 5 + 5 +1 = 41.

The sum of 30 plus 10 plus 5 plus 5 is 50.

5+5=10 5+5=10 10+10+5=25 so the answer is not 20, it is 25 or 5*5

25 as 10+10 is 20 plus 5 is 25

165

true

5 plus 5 would equal 10

25

-5 + 10 = 5

-10 + 5 = -5

20 + 10 + 5 = 35

-10