One-Digit by three or four -digit Multiplication

Front

What is multiplication?

Back

Multiplication is a mathematical operation where a number is added to itself a certain number of times. For example, 3 multiplied by 4 (3 x 4) means adding 3 four times: 3 + 3 + 3 + 3 = 12.

Front

What does it mean to multiply a one-digit number by a three-digit number?

Back

It means to take a one-digit number and multiply it by each digit of the three-digit number, starting from the rightmost digit.

Front

How do you multiply a one-digit number by a four-digit number?

Back

You multiply the one-digit number by each digit of the four-digit number, starting from the rightmost digit, and then add the results.

Front

What is the product of 2 and 345?

Back

The product is 690 (2 x 345 = 690).

Front

What is the first step in multiplying a one-digit number by a three-digit number?

Back

The first step is to multiply the one-digit number by the rightmost digit of the three-digit number.

Front

If you multiply 5 by 123, what do you do after the first multiplication?

Back

After multiplying 5 by 3 (the rightmost digit), you then multiply 5 by 2 (the next digit) and add a zero to the result.

Front

What is the importance of place value in multiplication?

Back

Place value helps us understand the value of each digit in a number, which is crucial when multiplying multi-digit numbers.

Front

How do you check your multiplication answer?

Back

You can check your answer by using addition or by reversing the multiplication (dividing the product by one of the factors).

Front

What is the product of 7 and 456?

Back

The product is 3192 (7 x 456 = 3192).

Front

What is an example of a one-digit by four-digit multiplication problem?

Back

An example is 6 x 1234.