Question

Item 9 Which expression can be used to find 252 ÷ 3? (24 ÷ 3) + (12 ÷ 3) (240 ÷ 3) + (12 ÷ 3) (250 ÷ 3) + (12 ÷ 3) (252 ÷ 2) + (252 ÷ 1)​

Answer 1

To find 252 ÷ 3, the correct expression is (240 ÷ 3) + (12 ÷ 3). Dividing each part and adding the quotients yields the final answer of 84.

Step-by-step explanation:

The expression that can be used to find 252 ÷ 3 is (240 ÷ 3) + (12 ÷ 3). To understand why this expression is correct, let's break down the number 252 into two parts: 240 and 12. By doing so, we're utilizing a property of division that allows us to divide each part separately and then add the results. Dividing 240 by 3, we get 80, and dividing 12 by 3, we get 4. When we add these two results together, we get 80 + 4, which equals 84. Therefore, (240 ÷ 3) + (12 ÷ 3) correctly gives us the result of 252 divided by 3.

Answer 2

Step-by-step explanation:

remember, we can only directly add or subtract fractions, if they have the same denominator (bottom part). but then we really can add or subtract them by simply adding or subtracting the numerators (to part).

if they don't have the same denominator, we have to transform them first to have the same denominator before we can add or subtract them.

24/3 + 12/3 = 36/3 so, no, wrong

240/3 + 12/3 = 252/3 yes correct

250/3 + 12/3 = 262/3 so, no, wrong

252/2 + 252/1 = 252/2 + (2×252)/2 =

= 252/2 + 504/2 = 756/2

so, no, wrong