Question

Evaluate the expression. Use estimation to check your answer. $$ -15.7+0.01+(-34.44) $$

Short answer

-50.13

Step-by-step solution

Add the negative numbers

Start by adding the negative numbers together. -15.7 and -34.44 together yields -50.14. It's important to align the decimal points when adding these numbers.

Add the positive number

Next, add the positive number 0.01 to -50.14. This results in -50.13. This is the final answer since there are no more numbers to add.

Estimation

An estimation can be done by rounding the numbers to the nearest integers, i.e., -16 + 0 + (-34), which yields -50. Comparing this with the actual result of -50.13 shows that our result is reasonable.