2 digit by 2 digit multiplication

Front

What is the process of using partial products in multiplication?

Back

Partial products involve breaking down one or both of the numbers into their place values, multiplying each part separately, and then adding the results together.

Front

How do you calculate the total hours worked in a given number of weeks?

Back

To calculate total hours worked, multiply the number of hours worked per day by the number of days in a week, and then multiply that by the number of weeks.

Front

What is the nearest ten of a number?

Back

The nearest ten of a number is the multiple of ten that is closest to that number. For example, the nearest ten to 44 is 40.

Front

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, look at the digit in the ones place. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the formula for finding the total number of items when given boxes and items per box?

Back

Total items = Number of boxes x Items per box.

Front

What is the significance of using estimation in multiplication?

Back

Estimation helps to quickly assess the reasonableness of an answer and can simplify calculations by rounding numbers.

Front

What is the result of multiplying 90 by 76 using partial products?

Back

Using partial products, 90 x 76 can be calculated as (90 x 70) + (90 x 6) = 6300 + 540 = 6840.

Front

How do you find a missing number in a multiplication problem?

Back

To find a missing number, you can use the relationship between the known numbers and the product, often by dividing the product by one of the known numbers.

Front

What is the product of 32 and 25?

Back

The product of 32 and 25 is 800.

Front

How can you check your multiplication answer?

Back

You can check your multiplication answer by using the inverse operation, which is division, to see if the product divided by one of the factors equals the other factor.