Chapter 2: Multiplying 3 and 4 digits by 1 digit

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the process of adding a number to itself a certain number of times.

Front

What is a product in multiplication?

Back

The product is the result of multiplying two or more numbers together.

Front

What does it mean to multiply a 3-digit number by a 1-digit number?

Back

It means to take a 3-digit number and add it to itself a certain number of times as indicated by the 1-digit number.

Front

How do you estimate the product of two numbers?

Back

To estimate the product, round the numbers to the nearest ten or hundred and then multiply.

Front

What are partial products?

Back

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

Front

Calculate the product: 126 x 4.

Back

504

Front

Calculate the product: 82 x 7.

Back

574

Front

Estimate the product: 5 x 426.

Back

5 x 400 = 2,000.

Front

What is the first step in multiplying 764 by 5?

Back

Multiply 5 by the digit in the ones place of 764, which is 4.

Front

What is the second step in multiplying 764 by 5?

Back

Multiply 5 by the digit in the tens place of 764, which is 6.