Question

A submarine began at sea level and descended toward the ocean floor at a rate of −0.015 km per minute. Its final depth was −0.3675 km. Estimate how long it took the submarine to reach its final depth by rounding the dividend and divisor to the nearest hundredth.

Estimate of the dividend:
0.37
0.38
–0.37
–0.38

Estimate of the divisor:
–0.02
–0.2
0.02
0.2

Estimate of the quotient:
1.85
5.67
18.5
23.2


*pick one for each*

Answer 1

.38 is the sheer tctcuuh

Answer 2

Dividend: -0.37
Divisor: -0.02
Quotient: 18.5

The dividend is -0.3675. Since the thousandth place is already above 5, you round it up to -0.37.

The divisor is -0.015. Since the thousandth place is 5, you round it up to -0.02.

For the quotient you divide -0.37 by -0.02 and get 18.5. (You can use a calculator or long division.)