homework_remembering_te_grade_4-1zwawpi

5-8
Name
Date
Solve. Then explain the meaning of the remainder.
1. There are 43 students at a musical
performance. Each row in the
auditorium has 8 seats. If the
students fill seats row by row
from front to back, how many
people are in the last row?
Write whether each number is prime or composite.
43 ÷ 8 = 5 R3; There are
3 people in the last row. The
remainder is the answer to
the question.
2. 49 3. 31 4. 17
composite prime prime
Solve.
Show your work.
5. The perimeter of a postage stamp is 90 millimeters. The
longer side of the stamp is 25 millimeters. What is the
length of the shorter side?
20 millimeters; 25 + 25 = 50; 90 - 50 = 40;
40 ÷ 2 = 20
6. Stretch Your Thinking The directions for lemonade say to
put 2 cups of the liquid concentrate into 1 gallon of water.
If Olivia only wants to make 1 pint of lemonade, how many
fluid ounces of concentrate should she use? Explain.
2 fluid ounces; First, I figured out how many pints
are in a gallon. I know 1 gallon is 4 quarts and 1 quart
is 2 pints, so 1 gallon is 4 × 2, or 8 pints. That means
Olivia wants to make one-eighth the original amount
of lemonade. So, she needs one-eighth the amount
of concentrate. Since 1 cup = 8 fluid ounces, the
2 original cups = 16 fluid ounces. One-eighth of
16 fluid ounces is 2 fluid ounces.
© Houghton Mifflin Harcourt Publishing Company
128 UNIT 5 LESSON 8 Focus on Mathematical Practices