partial product

Front

What is a partial product?

Back

A partial product is the result of multiplying a single digit of one number by the entire other number in a multiplication problem. It is used in the partial products method to simplify multiplication.

Front

How do you find a partial product?

Back

To find a partial product, multiply one digit of the first number by the entire second number, and write down the result. Repeat this for each digit of the first number.

Front

What is the first step in using partial products for multiplication?

Back

The first step is to break down the numbers into their place values.

Front

Calculate the partial products for 23 x 4.

Back

(20 x 4) + (3 x 4) = 80 + 12 = 92.

Front

What is the purpose of rounding numbers before multiplication?

Back

Rounding numbers can make calculations easier and quicker, especially when estimating.

Front

Round 143 to the nearest hundred.

Back

143 rounded to the nearest hundred is 100.

Front

Round 36 to the nearest ten.

Back

36 rounded to the nearest ten is 40.

Front

Round 211 to the nearest ten.

Back

211 rounded to the nearest ten is 210.

Front

What is the result of 378 x 5 using partial products?

Back

1,890.

Front

Solve 78 x 6 using partial products.

Back

(70 x 6) + (8 x 6) = 420 + 48 = 468.