Double Digit Multiplication Partial Products

Front

What is double digit multiplication?

Back

Double digit multiplication involves multiplying two numbers that each have two digits, such as 23 x 45.

Front

What are partial products in multiplication?

Back

Partial products are the results of multiplying each digit of one number by each digit of another number, then adding those results together.

Front

How do you break down 93 x 47 using partial products?

Back

93 x 47 can be broken down into (90 x 40) + (90 x 7) + (3 x 40) + (3 x 7).

Front

What is the first step in using partial products for 43 x 37?

Back

The first step is to multiply the tens place: 40 (from 43) x 30 (from 37) = 1,200.

Front

What is the second step in using partial products for 43 x 37?

Back

The second step is to multiply the tens place of one number by the ones place of the other: 40 (from 43) x 7 (from 37) = 280.

Front

What is the third step in using partial products for 43 x 37?

Back

The third step is to multiply the ones place of one number by the tens place of the other: 3 (from 43) x 30 (from 37) = 90.

Front

What is the fourth step in using partial products for 43 x 37?

Back

The fourth step is to multiply the ones place of both numbers: 3 (from 43) x 7 (from 37) = 21.

Front

How do you find the total of partial products?

Back

Add all the partial products together: 1,200 + 280 + 90 + 21 = 1,591.

Front

What is the result of 54 x 62 using partial products?

Back

54 x 62 = (50 x 60) + (50 x 2) + (4 x 60) + (4 x 2) = 3,348.

Front

What is the result of 72 x 86 using partial products?

Back

72 x 86 = (70 x 80) + (70 x 6) + (2 x 80) + (2 x 6) = 6,192.