The problem asks us to estimate the value of the expression $0.49+0.99$ without using a calculator and then use a calculator to evaluate the expression. Finally, compare the estimated and actual values.

Based on the image, the problem asks us to estimate the value of expressions without a calculator and then use a calculator to find the actual value. Then we will compare the estimated value to the actual value. However, the image doesn't show any math expressions to be estimated. I will assume it refers to the expression $0.49+0.99$.

1. Problem Description

The problem asks us to estimate the value of the expression $0.49+0.99$ without using a calculator and then use a calculator to evaluate the expression. Finally, compare the estimated and actual values.

2. Solution Steps

First, we need to estimate the value of $0.49+0.99$ without a calculator. We can round $0.49$ to $0.5$ and $0.99$ to $1.0$.

Estimated value = $0.5 + 1.0 = 1.5$

Next, we will calculate the exact value using a calculator.

$0.49 + 0.99 = 1.48$

Finally, we compare the estimated and the actual values.

The estimated value is $1.5$ and the actual value is $1.48$.

The estimated value is close to the actual value.

3. Final Answer

Estimated value: $1.5$

Actual value: $1.48$

The estimated value is close to the actual value.