PARCC Estimation Sequence 3

Question 1

A class needs 8 buses if each holds about 40 students and there are 312 students. Which estimate confirms 8 buses is enough?

Accepted Answer

8 × 40 = 320, more than 312

Answer

8 buses hold about 320 students, which exceeds the 312 needed.

Question 2

Which of these is the best estimate for 7.92 × 4.1?

Accepted Answer

32

Answer

Rounding to 8 × 4 gives 32.

Question 3

When is an UNDERestimate the safer choice?

Accepted Answer

Deciding how many people a small bridge can safely hold

Answer

Underestimating the safe load keeps the bridge from being overloaded.

Question 4

Estimate 41% of 198 using benchmark percents.

Accepted Answer

About 80

Answer

40% of 200 is 80, a close benchmark estimate.

Question 5

Which sequence of estimation steps best finds about how much 5 items at \$3.89 each cost?

Accepted Answer

Round 3.89 to 4, then 5 × 4 = 20

Answer

Rounding the price to \$4 and multiplying by 5 gives about \$20.

PARCC Practice Test