50 + (40 + 10) =

50×(40+10)

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40×(50+10)

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(50+40)+10

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10+(50×40)

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Solution

The correct option is C (50+40)+10
According to the associative property, the addition of a set of numbers yields the same result regardless of how the numbers are grouped.
a + (b + c) = (a + b) + c = (a + c) + b

$\Rightarrow$ 50 + (40 + 10) = (50 + 40) + 10
$\Rightarrow$ 50 + 50 = 100 = 90 + 10

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50 + (40 + 10) =

The correct option is C (50+40)+10According to the associative property, the addition of a set of numbers yields the same result regardless of how the numbers are grouped. a + (b + c) = (a + b) + c = (a + c) + b ⇒ 50 + (40 + 10) = (50 + 40) + 10 ⇒ 50 + 50 = 100 = 90 + 10

The correct option is C (50+40)+10
According to the associative property, the addition of a set of numbers yields the same result regardless of how the numbers are grouped.
a + (b + c) = (a + b) + c = (a + c) + b

$\Rightarrow$ 50 + (40 + 10) = (50 + 40) + 10
$\Rightarrow$ 50 + 50 = 100 = 90 + 10