2-Digit by 1-Digit Multiplication Quick Check

To multiply a 2-digit number by a 1-digit number, you can use the distributive property. Break the 2-digit number into tens and ones, multiply each part by the 1-digit number, and then add the results together.

392

232

130

138

213

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a number by a sum by distributing the multiplication across the addends.

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

Place value helps in understanding the value of each digit in a number, which is crucial when multiplying multi-digit numbers as it affects the final product.

Strategies include breaking down the 2-digit number into tens and ones, using rounding, or using the distributive property to make calculations easier.