4.OA.2 & 3

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 4 × 5 means adding 4 five times (4 + 4 + 4 + 4 + 4).

Tags

CCSS.3.OA.A.1

Front

What does it mean to find 'times as many'?

Back

Finding 'times as many' means to multiply a quantity by a certain number. For example, if someone has 4 seashells and another person has 5 times as many, they have 4 × 5 seashells.

Tags

CCSS.4.OA.A.2

Front

If Molly found 4 seashells and Asif found 5 times as many, how many seashells did Asif find?

Back

Asif found 20 seashells (4 × 5 = 20).

Tags

CCSS.4.OA.A.2

Front

What is the equation to represent Alessa eating 10 times as many raspberries as Tiberius?

Back

The equation is r = 100 ÷ 10, where r is the number of raspberries Tiberius has eaten.

Tags

CCSS.4.OA.A.1

Front

How do you compare two quantities using multiplication?

Back

You can compare two quantities by determining how many times one quantity fits into another. For example, if one item costs 9 dollars and another costs 4 times that, you can say the second item costs 4 times as much.

Front

What is the total number of hours in a week?

Back

There are 168 hours in a week (24 hours × 7 days = 168 hours).

Tags

CCSS.4.MD.A.1

Front

What does '3 times as long' mean?

Back

'3 times as long' means to multiply the length of one object by 3. For example, if a television show is 60 minutes long, a movie that is 3 times as long would be 60 × 3 = 180 minutes.

Tags

CCSS.4.OA.A.1

Front

If a movie is 3 times as long as a 60-minute show, how long is the movie?

Back

The movie is 180 minutes long (60 × 3 = 180).

Tags

CCSS.4.OA.A.1

Front

What is the relationship between addition and multiplication?

Back

Multiplication is a faster way to add the same number multiple times. For example, 4 + 4 + 4 + 4 = 4 × 4.

Tags

CCSS.5.OA.B.3

Front

What is the formula to find the total cost of items when one item costs a certain amount and another costs multiple times that amount?

Back

The formula is: Total Cost = Cost of Item 1 + (Cost of Item 1 × Number of Times).

Tags

CCSS.7.EE.B.3