Multiplying Whole Numbers

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 x 4 means adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

What is an estimate in multiplication?

Back

An estimate is a rough calculation of a value that is not exact. It helps to quickly assess the size of a product without calculating the exact answer.

Front

How do you estimate the product of two numbers?

Back

To estimate the product, round each number to the nearest ten or hundred, then multiply the rounded numbers.

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.

Front

What is the product of 5 and 6?

Back

30

Front

If you multiply 10 by 20, what is the product?

Back

200

Front

What is the best estimate for 38 x 419?

Back

16,000

Front

Jamie ate 325 calories at lunch each day for 18 days. What is the total amount of calories?

Back

5,850

Front

A delivery truck travels 346 miles each day for 24 days. What is the total number of miles?

Back

8,304

Front

Estimate the product of 34 x 93 by rounding each number to the nearest ten. Is it an overestimate or an underestimate?

Back

Underestimate.