4.OA.1 4.OA.2

Front

What is multiplication?

Back

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

Front

What does it mean to find a number that is 'times as much'?

Back

Finding a number that is 'times as much' means multiplying that number by a specific factor. For example, if a number is 3 times as much as 4, you calculate 4 × 3 = 12.

Front

If Matthew picked 48 apples and this is 6 times as much as Patricia picked, how do you find out how many apples Patricia picked?

Back

To find out how many apples Patricia picked, divide the number of apples Matthew picked by 6: 48 ÷ 6 = 8.

Front

What is the expression to find how many seashells Asif found if he found 5 times as many as Molly?

Back

The expression is 4 × 5, where 4 is the number of seashells Molly found.

Front

How do you calculate the total length of a movie that is 3 times as long as a 60-minute television show?

Back

Multiply the length of the television show by 3: 60 × 3 = 180 minutes.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. If you multiply a number by another, you can find the original number by dividing the product by that same number.

Front

If a gold pen costs 5 times as much as a red pen that costs $6, how do you find the cost of the gold pen?

Back

Multiply the cost of the red pen by 5: 6 × 5 = $30.

Front

What is a word problem in mathematics?

Back

A word problem is a mathematical question presented in a narrative form, requiring the reader to extract relevant information and perform calculations to find the answer.

Front

What does '3 times as many' mean in a mathematical context?

Back

'3 times as many' means to multiply the original quantity by 3.

Front

How can you express the total number of pages in a history book that has 3 times as many pages as a novel with 78 pages?

Back

The expression is 78 × 3, which equals 234 pages.