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Which expression has an estimated product of 45?

A. [tex]44.7 \times 2.1[/tex]
B. [tex]7.5 \times 8.4[/tex]
C. [tex]8.7 \times 5.28[/tex]
D. [tex]38.1 \times 7.3[/tex]

Answer :

To determine which expression has an estimated product of 45, let's evaluate each given expression one by one:

1. Expression: [tex]\( 44.7 \times 2.1 \)[/tex]
- Calculated Product: [tex]\( 93.87 \)[/tex]

2. Expression: [tex]\( 7.5 \times 8.4 \)[/tex]
- Calculated Product: [tex]\( 63.0 \)[/tex]

3. Expression: [tex]\( 8.7 \times 5.28 \)[/tex]
- Calculated Product: [tex]\( 45.936 \)[/tex]

4. Expression: [tex]\( 38.1 \times 7.3 \)[/tex]
- Calculated Product: [tex]\( 278.13 \)[/tex]

From the results, we can see that the product closest to 45 is:

[tex]\[ 8.7 \times 5.28 = 45.936 \][/tex]

Therefore, the expression [tex]\( 8.7 \times 5.28 \)[/tex] has an estimated product of 45.

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