Question

estimate the answer 34 × 89

Answer 1

Round 34 to 30 and round 89 to 90. Multiply 30 and 90 which equals to 2700.

Answer 2

It depend show you estimate the answer.
If you round 34 up to 35 you can use this estimation equation.
34 x 89= 35 x 90=3510
But if you're estimating by rounding 34 down to 30, you can use this estimation equation.
34 x 89= 30 x 90=2700