Multiplying Whole Numbers: Review

Front

What is multiplication?

Back

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

Tags

CCSS.3.OA.A.1

Front

What is the product of two whole numbers?

Back

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

Tags

CCSS.4.NBT.B.5

Front

How do you calculate the total cost of multiple items?

Back

To calculate the total cost, multiply the number of items by the cost of each item. For example, if one printer costs $300 and you buy 20 printers, the total cost is 20 x 300 = $6,000.

Front

What is the formula to find the total savings after several months?

Back

Total savings can be calculated by multiplying the amount saved each month by the number of months. For example, if you save $45 each month for 6 months, your total savings is 45 x 6 = $270.

Front

How do you find the total number of items produced over a period?

Back

To find the total number of items produced, multiply the number of items produced each day by the number of days. For example, if 83 cookies are baked every day for 2,053 days, the total is 83 x 2053 = 170,399 cookies.

Front

What does 'about' mean in a mathematical context?

Back

'About' indicates an estimation or approximation rather than an exact number. For example, if Alex runs about 15 miles a week for 64 weeks, the total is estimated as 15 x 64 = 960 miles.

Front

How do you calculate the total time spent on an activity?

Back

To calculate the total time spent, multiply the duration of the activity by the number of times it is done. For example, if each hockey game lasts 3 hours and Connor watches 67 games, the total time is 3 x 67 = 201 hours.

Tags

CCSS.7.EE.B.3

Front

What is the importance of estimating in multiplication?

Back

Estimating helps to quickly assess the reasonableness of an answer. For example, if you estimate 20 x 300, you can quickly see that the answer should be around $6,000.

Front

What is a whole number?

Back

A whole number is a non-negative integer that does not include fractions or decimals. Examples include 0, 1, 2, 3, etc.

Front

What is the associative property of multiplication?

Back

The associative property states that the way in which numbers are grouped in multiplication does not change the product. For example, (2 x 3) x 4 = 2 x (3 x 4).

Tags

CCSS.3.OA.B.5