2 digit by 2 digit multiplication

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.

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.

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.

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.

Total items = Number of boxes x Items per box.

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

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

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.

The product of 32 and 25 is 800.

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.