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Choose all the expressions that are equal to [tex]$66 \times 7,250$[/tex].

A. [tex]\left(725 \times 10^2\right) \times 66[/tex]

B. [tex](725 \times 10) \times 60 \times 6[/tex]

C. [tex]7,250 \times (60+6)[/tex]

D. [tex]7,250 \times 66[/tex]

E. [tex]66 \times (7,000+200)[/tex]

Answer :

To find which expressions are equal to [tex]\(66 \times 7,250\)[/tex], let's go through each expression one by one.

1. Expression 1: [tex]\((725 \times 10^2) \times 66\)[/tex]

- Here, [tex]\(725 \times 10^2\)[/tex] is the same as multiplying 725 by 100, which equals [tex]\(72,500\)[/tex].
- Then, [tex]\(72,500 \times 66\)[/tex] should be calculated to match the original expression. However, this calculation results in a different value than [tex]\(66 \times 7,250\)[/tex].

2. Expression 2: [tex]\((725 \times 10) \times 60 \times 6\)[/tex]

- First, [tex]\(725 \times 10 = 7,250\)[/tex].
- Then, multiply by 60: [tex]\(7,250 \times 60\)[/tex].
- Finally, multiply the result by 6. However, when we complete this calculation, it does not equal the original expression, due to the sequence and grouping of the multiplications differing.

3. Expression 3: [tex]\(7,250 \times (60 + 6)\)[/tex]

- First, calculate the sum inside the parentheses: [tex]\(60 + 6 = 66\)[/tex].
- Then, multiply [tex]\(7,250 \times 66\)[/tex].
- This results in the same value as the original expression, hence this expression is equal.

4. Expression 4: [tex]\(7,250 \times 66\)[/tex]

- This expression directly mirrors the original expression [tex]\(66 \times 7,250\)[/tex].
- Hence, they are definitely equal.

5. Expression 5: [tex]\(66 \times (7,000 + 200)\)[/tex]

- Calculate the sum inside the parentheses: [tex]\(7,000 + 200 = 7,200\)[/tex].
- Then, multiply [tex]\(66 \times 7,200\)[/tex].
- This results in a different value than the original expression.

From this analysis, the expressions equal to [tex]\(66 \times 7,250\)[/tex] are:
- [tex]\(7,250 \times (60 + 6)\)[/tex]
- [tex]\(7,250 \times 66\)[/tex]

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