Multiplication and Division Review Day 2

Front

What is multiplication?

Back

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

Front

What is division?

Back

Division is a mathematical operation that represents the process of splitting a number into equal parts. For example, 12 ÷ 4 means splitting 12 into 4 equal parts, which equals 3.

Front

How do you calculate the total cost of multiple items?

Back

To find the total cost, multiply the price of one item by the number of items. For example, if one ticket costs $528 and you buy 6 tickets, the total cost is 528 x 6 = $3,168.

Front

What is the product of two numbers?

Back

The product is the result of multiplying two numbers together. For example, the product of 5 and 6 is 30 (5 x 6 = 30).

Front

What is a missing digit problem in multiplication?

Back

A missing digit problem involves finding an unknown digit in a multiplication expression. For example, in 45? x 38 = 17,366, you need to find the missing digit that makes the equation true.

Front

How do you determine how many items you can buy with a certain amount of money?

Back

To find out how many items you can buy, divide the total amount of money by the cost of one item. For example, if you have $120 and each video game costs $14, you can buy 120 ÷ 14 = 8 games.

Front

What is the formula for calculating hours needed to complete a task?

Back

To calculate the hours needed, divide the total amount of work by the rate of work. For example, if 7,450 masks need to be made at a rate of 25 masks per hour, it will take 7,450 ÷ 25 = 298 hours.

Front

What does it mean to multiply by 10?

Back

Multiplying by 10 shifts the digits of a number one place to the left, effectively increasing its value tenfold. For example, 5 x 10 = 50.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. This means that if you multiply a number and then divide by the same number, you will return to the original number. For example, 6 x 3 = 18 and 18 ÷ 3 = 6.

Front

What is an array in multiplication?

Back

An array is a visual representation of multiplication using rows and columns. For example, a 3 x 4 array has 3 rows and 4 columns, representing 3 groups of 4.