Let's estimate 0.063 x 3.87 by rounding each number to the place of its leftmost nonzero digit.
First, round 0.063 to the nearest hundredth.
0.063 rounds to _____
Now round 3.87 to the nearest one.
3.87 rounds to _____
Multiply the rounded numbers.
First, round 0.063 to the nearest hundredth.
0.063 rounds to _____
Now round 3.87 to the nearest one.
3.87 rounds to _____
Multiply the rounded numbers.