Unit #3 Multiplication

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. It is one of the four basic operations in arithmetic.

Front

What is the product of two numbers?

Back

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

Front

How do you estimate the product of two numbers?

Back

To estimate the product, round each number to a convenient value (usually to the nearest ten or hundred) and then multiply the rounded numbers.

Front

What is the multiplication of 200 and 7?

Back

The product of 200 and 7 is 1,400.

Front

If Evelle bought 3.4 pounds of apples at $0.89 per pound, how do you calculate the total cost?

Back

Multiply the weight of the apples (3.4 pounds) by the price per pound ($0.89): 3.4 x 0.89 = $3.02.

Front

What is the estimated product of 76 and 34 using rounding?

Back

Rounding 76 to 80 and 34 to 30 gives an estimated product of 80 x 30 = 2,400.

Front

What is the product of 87 and 54?

Back

The product of 87 and 54 is 4,698.

Front

How do you estimate the product of 31.212 and 2.1?

Back

Round 31.212 to 30 and 2.1 to 2, then multiply: 30 x 2 = 60.

Front

What is the importance of estimation in multiplication?

Back

Estimation helps to quickly assess the reasonableness of an answer and can simplify calculations.

Front

What are the properties of multiplication?

Back

The properties include the commutative property (a x b = b x a), associative property ((a x b) x c = a x (b x c)), and distributive property (a x (b + c) = a x b + a x c).