Question

Estimate the product of the following
by grounding off to its highest place
a) 3243×22​

Answer 1

Answer:

Estimate the products of 34 and 86.

34 ⟶ 30 34 is rounded down to 30

86 ⟶ 90 86 rounded up to 90

34 ⟶ 30

86 ⟶ 90

34 is rounded down to 30

86 rounded up to 90

Calculate mentally 30 × 90 = 2700

The estimated product is

$2700$

Answer 2

Answer:

3243 = 3000

22=20

so, 3000×20= 60000