Question

Estimate the sum - 3500 + 4500​

Answer 1

Answer:

3500+4500=8000

Hope it helps you

Answer 2

$\bf \large \: \begin{gathered} {\underline{\boxed{ \rm {\red{ - \: 3500 \: + \: 4500}}}}}\end{gathered} \\ \\ \bf \large \: \begin{gathered} {\underline{\boxed{ \rm {\red{ \: = \: 1000}}}}}\end{gathered}$