Double Digit Multiplication

Front

What is double digit multiplication?

Back

Double digit multiplication is the process of multiplying two numbers that each have two digits, such as 23 x 45.

Front

How do you multiply two double digit numbers?

Back

To multiply two double digit numbers, you can use the standard algorithm: multiply each digit of the first number by each digit of the second number, then add the results.

Front

What is the first step in multiplying 28 x 56?

Back

The first step is to multiply the ones place of both numbers: 8 (from 28) x 6 (from 56) = 48.

Front

What do you do after multiplying the ones place in double digit multiplication?

Back

After multiplying the ones place, you multiply the tens place of the first number by the ones place of the second number, and then the ones place of the first number by the tens place of the second number.

Front

What is the product of 20 x 27?

Back

The product of 20 x 27 is 540.

Front

What is the product of 39 x 66?

Back

The product of 39 x 66 is 2574.

Front

What is the product of 52 x 35?

Back

The product of 52 x 35 is 1820.

Front

What is the product of 64 x 47?

Back

The product of 64 x 47 is 3008.

Front

What is the importance of place value in double digit multiplication?

Back

Place value helps in organizing the numbers correctly and ensures that each digit is multiplied by the correct corresponding digit.

Front

What is a common mistake in double digit multiplication?

Back

A common mistake is forgetting to add the carried over numbers when summing the results.