Topic 3 Review

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 × 4 means adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

How do you calculate the total number of items in multiple boxes?

Back

To find the total number of items in multiple boxes, multiply the number of items in one box by the number of boxes. For example, if one box has 125 envelopes and there are 18 boxes, the total is 125 × 18 = 2,250.

Front

What is a round trip distance?

Back

A round trip distance is the total distance traveled to a destination and back. For example, if Ms. Gomez flies 876 miles to her parents' house, the round trip distance for one visit is 876 × 2 = 1,752 miles.

Front

How do you find the total distance for multiple trips?

Back

To find the total distance for multiple trips, multiply the round trip distance by the number of trips. For example, for 12 visits at 876 miles round trip, the total distance is 876 × 12 = 10,512 miles.

Front

What does the exponent in a number mean?

Back

An exponent indicates how many times to multiply the base number by itself. For example, 10^4 means 10 × 10 × 10 × 10 = 10,000.

Front

What is the correct way to express 7.9 × 10^4?

Back

7.9 × 10^4 equals 79,000, not 7,900. The decimal moves four places to the right.

Front

How do you calculate the total number of e-books if one person has many times more than another?

Back

To find out how many e-books Eli has if he has 14 times as many as Trevor, multiply Trevor's e-books (228) by 14: 228 × 14 = 3,192.

Front

What is weight in terms of measurement?

Back

Weight is a measure of how heavy an object is, typically measured in pounds or kilograms.

Front

How do you calculate the total weight of multiple cartons?

Back

To find the total weight of multiple cartons, multiply the weight of one carton by the number of cartons. For example, if each carton weighs 235 pounds and there are 26 cartons, the total weight is 235 × 26 = 6,110 pounds.

Front

What is the formula for finding the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. Area = length × width.