(b) Estimate $$ 42.5-7.47+11.011 $$ mentally. $$ 42.5-7.47+11.011 $$ is approximately equal to $$ \square $$ (Type a whole number.)

Question

UpStudy AI · Accepted Answer

To estimate $$ 42.5 - 7.47 + 11.011 $$ mentally, we can round the numbers to make the calculation easier.

1. Round $$ 42.5 $$ to $$ 43 $$.
2. Round $$ 7.47 $$ to $$ 7.5 $$.
3. Round $$ 11.011 $$ to $$ 11 $$.

Now, we can perform the estimation:

$$
43 - 7.5 + 11
$$

Calculating step by step:

1. First, calculate $$ 43 - 7.5 $$:
   $$
   43 - 7.5 = 35.5
   $$

2. Next, add $$ 11 $$:
   $$
   35.5 + 11 = 46.5
   $$

Since we need to provide a whole number, we can round $$ 46.5 $$ to $$ 47 $$.

Thus, $$ 42.5 - 7.47 + 11.011 $$ is approximately equal to $$ \boxed{47} $$.
$$ 42.5 - 7.47 + 11.011 $$ is approximately equal to $$ 47 $$.

(b) Estimate \( 42.5-7.47+11.011 \) mentally. \( 42.5-7.47+11.011 \) is approximately equal to \( \square \) (Type a whole number.)